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- .rs
- .\" Troff code generated by TPS Convert from ITU Original Files
- .\" Not Copyright ( c) 1991
- .\"
- .\" Assumes tbl, eqn, MS macros, and lots of luck.
- .TA 1c 2c 3c 4c 5c 6c 7c 8c
- .ds CH
- .ds CF
- .EQ
- delim @@
- .EN
- .nr LL 40.5P
- .nr ll 40.5P
- .nr HM 3P
- .nr FM 6P
- .nr PO 4P
- .nr PD 9p
- .po 4P
-
- .rs
- \v | 5i'
- .sp 1P
- .ce 1000
- \v'3P'
- SECTION\ 5
- .ce 0
- .sp 1P
- .ce 1000
- \fBSUPPLEMENTARY\ SERVICES\ IN\ ISDN\fR
- .ce 0
- .sp 1P
- .sp 2P
- .LP
- \fBRecommendation\ I.250\fR
- .RT
- .sp 2P
- .sp 1P
- .ce 1000
- \fBDEFINITION\ OF\ SUPPLEMENTARY\ SERVICES\fR
- .EF '% Fascicle\ III.7\ \(em\ Rec.\ I.250''
- .OF '''Fascicle\ III.7\ \(em\ Rec.\ I.250 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fI(Melbourne, 1988)\fR
- .sp 9p
- .RT
- .ce 0
- .sp 1P
- .LP
- \fB1\fR \fBGeneral\fR
- .sp 1P
- .RT
- .PP
- Recommendation I.210 describes the principles for defining
- telecommunication services supported by an ISDN including the concept of
- bearer services, teleservices and supplementary services. It also provides
- the means for the definition and description of such services.
- .PP
- The purpose of this Recommendation is to define a recommended set of supplementary
- services to be used in association with basic bearer services and with
- basic teleservices. These definitions form the basis for detailed
- descriptions as given in Recommendations\ I.251 to I.257, which are used to
- define the network capabilities required.
- .PP
- Supplementary services are described by prose definitions and
- descriptions and by dynamic descriptions following the description method
- given in Recommendation\ I.130. The application for supplementary services
- of the
- attribute technique described in Recommendation\ I.140 is for further study.
- .PP
- \fINote\fR \ \(em\ Alignment and interworking between user facilities as
- defined in Recommendations\ X.2 and\ X.301 for the provision of data transmission
- services and the supplementary services in the I.250\(hySeries and interworking
- in the I.500\(hySeries of Recommendations require further study.
- .RT
- .sp 2P
- .LP
- \fB2\fR \fBList of supplementary services\fR
- .sp 1P
- .RT
- .PP
- The following set of supplementary services is currently identified and
- more may be identified in the future:
- .RT
- .LP
- Recommendation
- I.251
- Number Identification supplementary
- services
- .LP
- I.251.1
- Direct\(hyDialling\(hyIn (DDI)
- .LP
- I.251.2
- Multiple Subscriber Number (MSN)
- .LP
- I.251.3
- Calling Line Identification Presentation (CLIP)
- .LP
- I.251.4
- Calling Line Identification Restriction (CLIR)
- .LP
- I.251.5
- Connected Line Identification Presentation (COLP)
- .LP
- I.251.6
- Connected Line Identification Restriction (COLR)
- .LP
- I.251.7
- Malicious Call Identification (MCI) (Note)
- .LP
- I.251.8
- Sub\(hyaddressing (SUB) (Note)
- .bp
- .LP
- Recommendation
- I.252
- Call Offering supplementary services
- .LP
- I.252.1
- Call Transfer (CT)
- .LP
- I.252.2
- Call Forwarding Busy (CFB)
- .LP
- I.252.3
- Call Forwarding No Reply (CFNR)
- .LP
- I.252.4
- Call Forwarding Unconditional (CFU)
- .LP
- I.252.5
- Call Deflection (CD) (Note)
- .LP
- I.252.6
- Line Hunting (LH)
- .LP
- Recommendation
- I.253
- Call Completion supplementary services
- .LP
- I.253.1
- Call Waiting (CW)
- .LP
- I.253.2
- Call Hold (HOLD)
- .LP
- I.253.3
- Completion of Calls to Busy Subscribers (CCBS)
- (Note)
- .LP
- Recommendation
- I.254
- Multiparty supplementary services
- .LP
- I.254.1
- Conference Calling (CONF)
- .LP
- I.254.2
- Three Party Service (3PTY)
- .LP
- Recommendation
- I.255
- Community of Interest supplementary
- services
- .LP
- I.255.1
- Closed User Group (CUG)
- .LP
- I.255.2
- Private Numbering Plan (PNP) (Note)
- .LP
- Recommendation
- I.256
- Charging supplementary services
- .LP
- I.256.1
- Credit Card Calling (CRED) (Note)
- .LP
- I.256.2
- Advice of Charge (AOC)
- .LP
- I.256.3
- Reverse Charging (REV) (Note)
- .LP
- Recommendation
- I.257
- Additional Information Transfer supplementary
- service
- .LP
- I.257.1
- User\(hyto\(hyUser Signalling (UUS)
- .PP
- \fINote\fR \ \(em\ This service having been identified now requires
- further study; its description is not yet included.
- .sp 2P
- .LP
- \fB3\fR \fBAssociation of supplementary services to bearer services and
- teleservices\fR
- .sp 1P
- .RT
- .PP
- Table 1/I.250 shows the association of supplementary services to
- basic bearer services and basic teleservices identified so far. Their provision
- in a particular ISDN is a network provider's option. Other associations
- are for further study.
- .PP
- Service Recommendations of the F\(hySeries may recommend the individual
- provision of supplementary services with teleservices, for example, the
- provision with the telematic services Teletex, Telefax, Mixed Mode,\ etc.
- .RT
- .sp 2P
- .LP
- \fB4\fR \fBDefinitions of supplementary services\fR \v'3p'
- .sp 1P
- .RT
- .LP
- a)
- At stage 1 of the description method the services are
- described from the user's perspective, but do not concern details of the
- human interface itself. For example, in Call Waiting there is a statement
- that the
- served user \*Qshall be informed\*U that a call is waiting. It does not specify
- whether this shall be accomplished by a bell, a light, a synthesized
- voice,\ etc.
- .LP
- b)
- Similarly, the stage 1 service description is independent of the amount
- of functionality in the user's terminal other than that required to provide
- the human interface. For example, the Conference Calling Service
- description is designed to be independent of whether the conference bridge
- is in the terminal, in the serving exchange, or elsewhere.
- .LP
- c)
- While the service descriptions are directly applicable to
- public networks, it is expected that the design of private networks will
- take these descriptions into account in order to ease the interworking
- between
- public and private networks.
- .LP
- d)
- Although reference is made to human users, there is no
- restriction on a machine or procedures being the user of these supplementary
- services. Examples include automatic answering terminals, voice announcement
- systems,\ etc.
- .LP
- e)
- Combining points a) to d), there is no prohibition against \*Qmachines\*U
- (e.g.\ call distributors) that \fIuse\fR the CCITT described services and
- then \fIoffer\fR the same or other (e.g.\ customized) services to \fItheir\fR
- users.
- .LP
- f
- )
- Lastly, the \*Qmachine\*U referred to above could, in
- fact, be an entire private network.
- .bp
- .ce
- \fBH.T. [1T1.250]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- cw(342p) .
- TABLE\ 1/I.250
- .T&
- cw(342p) .
- {
- \fBAssociation of supplementary services to basic bearer\fR
- \fBservices and to basic teleservices supported
- by ISDN\fR
- }
- .TE
- .TS
- center box ;
- cw(78p) | cw(24p) sw(24p) sw(24p) sw(24p) sw(24p) sw(24p) | cw(24p) sw(24p) sw(24p) sw(24p) sw(24p) , ^ | c | c | c | c | c | c | c | c | c | c | c.
- Supplementary services {
- Circuit mode bearer services
- } Teleservices
- {
- 64 kbit/s unrestricted demand
- } 64 kbit/s speech demand {
- 64 kbit/s, 3.1\ kHz audio demand
- } {
- 64 kbit/s unrestricted permanent
- } {
- 64 kbit/s, 3.1\ kHz audio permanent
- } {
- 1920 kbit/s unrestricted permanent
- } Telephony Teletex Telefax 4 Videotex Mixed mode
- _
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Direct\(hydialling\(hyin X X X X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Multiple subscriber number X X X X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Calling line identification presentation
- } X X X \ub\d\u)\d \ub\d\u)\d \ub\d\u)\d X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Calling line identification restriction
- } X X X \ub\d\u)\d \ub\d\u)\d \ub\d\u)\d X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Connected line identification presentation
- } X X X \ub\d\u)\d \ub\d\u)\d \ub\d\u)\d X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Connected line identification restriction
- } X X X \ub\d\u)\d \ub\d\u)\d \ub\d\u)\d X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Malicious calls identification | ua\d\u)\d
- }
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Sub\(hyaddressing | ua\d\u)\d
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call transfert X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call forwarding busy X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call forwarding no reply X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call forwarding unconditional X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call deflection | ua\d\u)\d
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Line hunting X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call waiting X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Call hold X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Completion of calls to busy subscribers | ua\d\u)\d
- }
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Conference calling X X X X
- _
- .TE
- .nr PS 9
- .RT
- .ad r
- \fBTable 1/I.250 [1T1.250], p. \ \ \ A L'ITALIENNE\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .ce
- \fBH.T. [2T1.250]\fR
- .ps 9
- .vs 11
- .nr VS 11
- .nr PS 9
- .TS
- center box;
- cw(342p) .
- {
- TABLE\ 1/I.250 \fI(continued)\fR
- }
- .TE
- .TS
- center box;
- cw(78p) | cw(24p) sw(24p) sw(24p) sw(24p) sw(24p) sw(24p) | cw(24p) sw(24p) sw(24p) sw(24p) sw(24p) , ^ | c | c | c | c | c | c | c | c | c | c | c.
- Supplementary services {
- Circuit mode bearer services
- } Teleservices
- {
- 64 kbit/s unrestricted demand
- } 64 kbit/s speech demand {
- 64 kbit/s, 3.1\ kHz audio demand
- } {
- 64 kbit/s unrestricted permanent
- } {
- 64 kbit/s, 3.1\ kHz audio permanent
- } {
- 1920 kbit/s unrestricted permanent
- } Telephony Teletex Telefax 4 Videotex Mixed mode
- _
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | lw(24p) .
- Three party service X X X \fR X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Closed user group X X X \fR X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Private numbering plan | ua\d\u)\d
- }
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- {
- Credit card calling | ua\d\u)\d
- }
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Advice of charge X X X \fR X X X X X
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | lw(24p) | lw(24p) | lw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- Reserve charging | ua\d\u)\d
- .T&
- lw(78p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) | cw(24p) .
- User\(hyto\(hyuser signalling X X X \ub\d\u)\d \ub\d\u)\d \ub\d\u)\d X X X X
- .TE
- .IP X
- denotes applications of supplementary services identified within each
- supplementary service description; other associations are for further
- study.
- .LP
- \ua\d\u)\d
- This supplementary service is not yet included in the
- descriptions.
- .LP
- \ub\d\u)\d
- Further study is required on the association of this supplementary service to this circuit mode bearer service.
- .nr PS 9
- .RT
- .ad r
- \fBTableau 1/I.250 [2T1.250], p. 2 \ \ \ A L'ITALIENNE\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .sp 2P
- .LP
- 4.1
- \fINumber Identification supplementary services\fR
- (Recommendation\ I.251)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.251.1\ \ \fBDirect Dialling In (DDI)\fR is a supplementary service which
- enables a user to directly call another user on a ISPBX or other private
- system without attendant intervention.
- .sp 9p
- .RT
- .LP
- I.251.2\ \ \fBMultiple Subscriber Number (MSN)\fR is a supplementary service
- which provides the possibility for assigning multiple ISDN numbers to a
- single
- interface.
- .LP
- I.251.3\ \ \fBCalling Line Identification Presentation (CLIP)\fR is a
- supplementary service offered to the called party which provides the calling
- party's ISDN\(hynumber, possibly with sub\(hyaddress information, to the called
- party.
- .LP
- I.251.4\ \ \fBCalling Line Identification Restriction (CLIR)\fR is a supplementary
- service offered to the calling party to restrict presentation of the calling
- party's ISDN\(hynumber and sub\(hyaddress to the called party.
- .LP
- I.251.5\ \ \fBConnected Line Identification Presentation (COLP)\fR is a
- supplementary service offered to the calling party which provides the connected
- party's ISDN\(hynumber to the calling party.
- .LP
- I.251.6\ \ \fBConnected Line Identification Restriction (COLR)\fR is a
- supplementary service offered to the connected party to restrict presentation
- of the connected party's ISDN\(hynumber to the calling party.
- .LP
- I.251.7\ \ Malicious call identifiction (Definition not yet included, further
- study is needed).
- .LP
- I.251.8\ \ Sub\(hyaddressing (Definition not yet included, further study is
- needed).
- .sp 2P
- .LP
- 4.2
- \fICall Offering supplementary services\fR (Recommendation\ I.252)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.252.1\ \ \fBCall Transfer\fR is a supplementary service which enables
- a user to transfer an established (i.e.\ active) call to a third party.
- For the
- original call, the served user may have been either the calling or called
- party (i.e.\ it may have been either an incoming or outgoing call).
- .sp 9p
- .RT
- .LP
- I.252.2\ \ \fBCall Forwarding Busy (CFB)\fR is a supplementary service which
- permits a served user to have the network send to another number all incoming
- calls for the served user's ISDN number (or just those associated with
- a
- specified basic service) which meet busy at the served user's ISDN number.
- The served user's originating service is unaffected.
- .LP
- I.252.3\ \ \fBCall Forwarding No Reply (CFNR)\fR is a supplementary service
- which permits a served user to have the network send to another number
- all incoming calls for the served user's ISDN number which meet no reply
- (or just those
- associated with a specific basic service which meet no reply). The served
- user's originating service is unaffected.
- .LP
- I.252.4\ \ \fBCall Forwarding Unconditional (CFU)\fR is a supplementary service
- which permits a served user to have the network send to another number all
- incoming calls for the served user's ISDN number (or just those associated
- with a specified basic service). The served user's originating service
- is
- unaffected. If this service is activated, calls are forwarded regardless
- of the condition of the termination.
- .LP
- I.252.5\ \ Call Deflection (Definition not yet included, further study is
- needed).
- .LP
- I.252.6\ \ \fBLine Hunting\fR is a supplementary service which enables incoming
- calls to a specific ISDN number to be distributed over a group of interfaces.
- .sp 2P
- .LP
- 4.3
- \fICall Completion supplementary services\fR (Recommendation\ I.253)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.253.1\ \ \fBCall Waiting\fR is a supplementary service which permits a
- subscriber to be notified of an incoming call (as per Basic Call procedures)
- with an indication that no interface information channel is available.
- The user then has the choice of accepting, rejecting or ignoring the waiting
- call (as
- per Basic Call procedures).
- .sp 9p
- .RT
- .LP
- I.253.2\ \ \fBCall Hold\fR is a supplementary service which allows a user to
- interrupt communications on an existing call/connection and then subsequently,
- if desired, reestablish communications.
- .LP
- I.253.3\ \ Completion of Calls to Busy Subscribers (Definition not yet
- included, further study is needed).
- .bp
- .sp 2P
- .LP
- 4.4
- \fIMultiparty supplementary services\fR (Recommendation I.254)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.254.1\ \ \fBConference Calling\fR is an ISDN supplementary service which
- allows a user to communicate simultaneously with multiple parties, which may
- also communicate among themselves.
- .sp 9p
- .RT
- .LP
- I.254.2\ \ \fBThree\(hyParty Service\fR is a supplementary service which
- enables a
- user who is active on a call to hold that call, make an additional call to a
- third party, switch from one call to the other as required (privacy being
- provided between the two calls), and/or release one call and return to the
- other. Optionally, the served user could subscribe to an ability to join the
- two calls together into a three\(hyway conversation.
- .sp 2P
- .LP
- 4.5
- \fICommunity of Interest supplementary services\fR
- (Recommendation I.255)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.255.1\ \ \fBClosed User Group (CUG)\fR is a supplementary service which
- enables users to form groups, to and from which access is restricted. A
- specific user may be a member of one or more CUGs. Members of a specific CUG
- can communicate among themselves but not, in general, with users outside the
- group. Specific CUG members can have additional capabilities that allow
- them to originate calls outside the group, and/or to receive calls from
- outside the
- group. Specific CUG members can have additional restrictions that prevent
- them from originating calls to other members of the CUG, or from receiving
- calls
- from other members of the CUG.
- .sp 9p
- .RT
- .LP
- I.255.2\ \ Private Numbering Plan (Definition not yet included, further
- study is needed).
- .sp 2P
- .LP
- 4.6
- \fICharging supplementary services\fR (Recommendation I.256)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.256.1\ \ Credit Card Calling (Definition not yet included, further study
- is needed).
- .sp 9p
- .RT
- .LP
- I.256.2\ \ \fBAdvice of Charge\fR is a supplementary service allowing the user
- paying for a call to be informed of usage\(hybased charging information.
- .PP
- This service may include one or more of the following cases:
- .LP
- 1)
- Charging information at the end of the call.
- .LP
- 2)
- Charging information during a call.
- .LP
- 3)
- Charging information at call setup time.
- .LP
- I.256.3\ \ Reverse charging (Definition not yet included, further study is
- needed).
- .sp 2P
- .LP
- 4.7
- \fIAdditional information transfer supplementary service\fR
- (Recommendation\ I.257)
- .sp 1P
- .RT
- .sp 1P
- .LP
- I.257.1\ \ \fBUser\(hyto\(hyUser Signalling (UUS)\fR is a supplementary
- service which allows an ISDN user to send/receive a limited amount of information
- to/from
- another ISDN user over the signalling channel in association with a call
- to the other ISDN user.
- .sp 9p
- .RT
- .sp 2P
- .LP
- \fBRecommendation\ I.251\fR
- .RT
- .sp 2P
- .sp 1P
- .ce 1000
- \fBNUMBER\ IDENTIFICATION\ SUPPLEMENTARY\ SERVICES\fR
- .EF '% Fascicle\ III.7\ \(em\ Rec.\ I.251''
- .OF '''Fascicle\ III.7\ \(em\ Rec.\ I.251 %'
- .ce 0
- .sp 1P
- .ce 1000
- \fI(Melbourne, 1988)\fR
- .sp 9p
- .RT
- .ce 0
- .sp 1P
- .PP
- The purpose of this Recommendation is to provide the stage 1 description
- of the method defined in Recommendation\ I.130 using the means given in
- Recommendation\ I.210.
- .sp 1P
- .RT
- .PP
- Supplementary services are described by a prose definition and
- description (step\ 1.1) and by a dynamic description (step\ 1.3). The application
- of the attribute technique (step\ 1.2), as defined in Recommendation\ I.140,
- for supplementary services is for further study.
- .PP
- This Recommendation describes the following Number Identification
- supplementary services:
- .RT
- .LP
- I.251.1
- Direct\(hyDialling\(hyIn (DDI)
- .LP
- I.251.2
- Multiple Subscriber Number (MSN)
- .LP
- I.251.3
- Calling Line Identification Presentation (CLIP)
- .LP
- I.251.4
- Calling Line Identification Restriction (CLIR)
- .bp
- .LP
- I.251.5
- Connected Line Identification Presentation (COLP)
- .LP
- I.251.6
- Connected Line Identification Restriction (COLR)
- .LP
- I.251.7
- Malicious Call Identification (MCI) (Note)
- .LP
- I.251.8
- Sub\(hyaddressing (SUB) (Note)
- .PP
- \fINote\fR \ \(em\ This service having been identified now requires further
- study, its description is not yet included.
- .sp 2P
- .LP
- \fB1\fR I.251.1\ \(em
- \fBDirect\(hyDialling\(hyIn\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Direct\(hyDialling\(hyIn (DDI) enables a user to directly call another
- user on an integrated services private branch exchange (ISPBX) or other
- private system without attendant intervention.
- .RT
- .sp 2P
- .LP
- 1.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- A part of the ISDN number, which is significant to the called user, is
- passed to that user during call establishment. This supplementary service
- is based on the use of the ISDN number and does not include
- sub\(hyaddressing.
- .PP
- \fINote 1\fR \ \(em\ A similar method to select a terminal on a passive
- bus is described in the supplementary service MSN.
- .PP
- \fINote 2\fR \ \(em\ The caller may or may not find the ISDN number in the
- public directory.
- .RT
- .sp 1P
- .LP
- 1.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None.
- .RT
- .sp 1P
- .LP
- 1.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- No restrictions.
- .RT
- .sp 2P
- .LP
- 1.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.3.1
- \fIProvisionB/Fwithdrawal\fR
- .sp 9p
- .RT
- .PP
- This service shall be provided/withdrawn after pre\(hyarrangement with
- the service provider. The service provider shall allocate a set of ISDN
- numbers.
- .RT
- .sp 2P
- .LP
- 1.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.3.2.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- Activation through subscription.
- .RT
- .sp 1P
- .LP
- 1.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- Call initiation procedures are the same as for the basic service. The calling
- and called users perceive the same completion procedures as for the basic
- service, without attendant intervention. Upon answer, the calling user
- is connected to the called user designated by the ISDN number.
- .PP
- \fINote\fR \ \(em\ When the connection from the caller to the ISPBX is
- established, the called ISPBX might use the connection for call progress
- signalling transmission.
- .RT
- .sp 2P
- .LP
- 1.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.3.3.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- Not applicable.
- .bp
- .RT
- .sp 1P
- .LP
- 1.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- If the called user is busy or does not answer, the procedures for basic
- calls will apply.
- .PP
- If a call is made by sending incomplete address information, the call will
- be released by time supervision within the public exchange. A
- corresponding time supervision within the ISPBX may also be convenient.
- .RT
- .sp 2P
- .LP
- 1.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.3.4.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 1.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 1.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 1.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- No problems identified.
- .RT
- .sp 2P
- .LP
- 1.6
- \fIInteraction with other supplementary services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- For further study.
- .RT
- .sp 1P
- .LP
- 1.6.4
- \fIConnected Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 1.6.8
- \fIConference Calling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.9
- \fIDirect\(hyDialling\(hyIn\fR
- .sp 9p
- .RT
- .PP
- Not applicable.
- .RT
- .sp 2P
- .LP
- 1.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 1.6.10.1
- \fICall Forwarding Busy\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.10.2
- \fICall Forwarding No Reply\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.10.3
- \fICall Forwarding Unconditional\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.11
- \fILine Hunting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.12
- \fIThree\(hyParty Service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.6.16
- \fIAdvice of Charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 1.7.
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description is as for basic services.
- .bp
- .RT
- .sp 2P
- .LP
- \fB2\fR I.251.2\ \(em
- \fBMultiple Subscriber Number\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Multiple Subscriber Number (MSN) provides the possibility for
- assigning multiple ISDN numbers to a single interface. For example, this
- service:
- .RT
- .LP
- 1)
- allows dialling from a line connected to a public network
- directly to terminals connected to a basic access which has subscribed
- to MSN (e.g.\ in a passive bus configuration);
- .LP
- 2)
- enables the network to determine which ISDN number is
- applicable on originating calls (e.g.\ for charging purposes, for notification
- to the called party and application for supplementary services).
- .LP
- It is considered:
- .LP
- \(em
- that some Administrations may not have knowledge or control over what
- is connected to the basic access, e.g.\ an NT2 or passive bus;
- .LP
- \(em
- that Administrations have differing numbering methods;
- .LP
- \(em
- that common international terminal specifications are
- desired.
- .sp 2P
- .LP
- 2.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- The addressing of terminals on a basic access may be achieved by
- applying a set of ISDN numbers to the single basic access. When a call
- with one of these ISDN numbers is delivered, the called number is indicated
- to the MSN user, either directly or through a mapping by the network.
- .PP
- In general, any set of numbers may be sent from the network to the
- subscriber's equipment during call establishment. However, it is recognized
- that administrative practices and certain equipment designs may lead to the
- adoption of restricted numbering sequences, e.g.\ by relating the last
- digit(s) of a fixed length ISDN number to the terminals to be connected.
- The actual
- method of relating the ISDN number to a particular terminal is a matter of
- national implementation but may, for example, be done by central intelligence
- or by distributed intelligence within the terminals.
- .PP
- The essential difference between this supplementary service and DDI
- concerns the length of the number sent to, and processed by, the user's
- installation. In the DDI situation the user (ISPBX) will be tailored on
- a per installation basis to receive the particular number of digits necessary
- to
- identify the terminals of this user (ISPBX).
- .PP
- With the multiple subscriber number supplementary service however, the
- service provider will fix the length of the number to be transmitted to
- the
- user's installation. It may comprise 1 or 2 or 3 of the last digits up
- to the full ISDN number. This number will be sent to the user network interface.
- .PP
- The digit(s) significant for terminal differentiation is/are an
- integral part of the ISDN numbering scheme.
- .PP
- \fINote\fR \ \(em\ MSN is independent from and does not impose any constraints
- on \*Qservice indication\*U and \*Qsub\(hyaddressing\*U.
- .RT
- .sp 1P
- .LP
- 2.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None.
- .RT
- .sp 1P
- .LP
- 2.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- No restrictions.
- .RT
- .sp 2P
- .LP
- 2.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.3.1
- \fIProvision/withdrawal\fR
- .sp 9p
- .RT
- .PP
- The service shall be provided after pre\(hyarrangement with the
- service provider.
- .PP
- The service provider shall allocate a set of ISDN numbers (not
- necessarily consecutive). At the option of the service provider, one of
- these numbers may be designated by the MSN subscriber as the default number
- for the interface. At the option of the service provider, the user may
- specify a
- mapping arrangement between ISDN number and MSN digit(s).
- .bp
- .RT
- .sp 2P
- .LP
- 2.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.3.2.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- Activation through subscription.
- .RT
- .sp 1P
- .LP
- 2.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- The destination number sent by the calling user will be analyzed in the
- network. If the called user subscribes to this supplementary service, the
- network sends the available part of the ISDN number or at least the relating
- digit(s):
- .RT
- .LP
- i)
- identical to that last digit(s) of the ISDN number; or
- .LP
- ii)
- generated by the network on the basis of a mapping process between ISDN
- number(s) and MSN digit(s).
- .PP
- Terminals compatible to the MSN service will react on a call as
- follows:
- .LP
- \(em
- if MSN digit(s) equal to their own preadjusted identity is
- (are) presented, they react to it in a predetermined way;
- .LP
- \(em
- if there is a set\(hyup message without MSN digit(s), the
- terminal will interpret it as a normal call. (This may happen if a terminal
- with MSN capabilities is used on an interface, where MSN is not subscribed
- for.)
- .PP
- Terminals not compatible to the MSN service will react to a call as follows:
- .LP
- \(em
- whether there is (are) MSN digit(s) or not, the call will
- be interpreted as a normal call.
- .PP
- On outgoing calls a terminal compatible with the MSN service may provide
- the ISDN number (or MSN digits) when placing the call. The network will
- carry this identity unchanged or will replace the digit(s) by the associated
- ISDN number. The ISDN number of the calling terminal will then be sent
- to the called user with the incoming call (refer to \(sc\ 3, CLIP supplementary
- service).
- .PP
- It is possible to allocate one ISDN number to one or more terminals. Similarly,
- one terminal may allow the assignment of one or more than one
- number. Further, as an administrative option a specific digit or sequence of
- digits may be allocated to enable all terminals in a point\(hyto\(hymultipoint
- configuration to react in the same way as they would if the supplementary
- service MSN were not subscribed to.
- .RT
- .sp 2P
- .LP
- 2.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.3.3.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- Not applicable.
- .RT
- .sp 1P
- .LP
- 2.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- An ISDN number or MSN digits, generated by a terminal at an
- interface where MSN is in operation shall be discarded by the network unless
- this number is subscribed to by this interface. A default number may be
- provided by the network.
- .RT
- .sp 2P
- .LP
- 2.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.3.4.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 2.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .bp
- .RT
- .sp 1P
- .LP
- 2.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 2.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 2.6
- \fIInteraction with other supplementary services\fR
- .sp 9p
- .RT
- .PP
- In case of interaction with other supplementary services, these
- services could be applicable to the individual MSN rather than to the
- subscriber access.
- .RT
- .sp 1P
- .LP
- 2.6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- See COLP (\(sc 5) interaction with MSN.
- .RT
- .sp 1P
- .LP
- 2.6.4
- \fIConnected Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- Upon call initiation, if the ISDN number indicated by the MSN user terminal
- is not subscribed to for the interface, or if no numbering information
- is indicated, a default number (if designated by the MSN subscriber) or
- a
- number unavailable indication is provided to the CLIP user.
- .RT
- .sp 1P
- .LP
- 2.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- For further study.
- .RT
- .sp 1P
- .LP
- 2.6.8
- \fIConference Calling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.9
- \fIDirect\(hyDialling\(hyIn\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 2P
- .LP
- 2.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 2.6.10.1
- \fICall Forwarding Busy\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.10.2
- \fICall Forwarding No Reply\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary
- service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.10.3
- \fICall Forwarding Unconditional\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.11
- \fILine Hunting service\fR
- .sp 9p
- .RT
- .PP
- For further study.
- .RT
- .sp 1P
- .LP
- 2.6.12
- \fIThree\(hyParty Service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- Not applicable.
- .RT
- .sp 1P
- .LP
- 2.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.6.16
- \fIAdvice of Charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary
- service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 2.7
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description is as for the basic services.
- .RT
- .sp 2P
- .LP
- \fB3\fR I.251.3\ \(em
- \fBCalling Line Identification Presentation\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Calling Line Identification Presentation (CLIP) is a supplementary service
- offered to the called party which provides the calling party's
- ISDN\(hynumber, possibly with sub\(hyaddress information, to the called party.
- .RT
- .sp 2P
- .LP
- 3.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- When CLIP is applicable and activated, the network provides the
- called party with the number of the calling party at call set\(hyup on all
- incoming calls.
- .bp
- .PP
- The calling party number may be accompanied by a sub\(hyaddress.
- .PP
- The network should be capable of transmitting at least 15 digits
- (maximum length of an ISDN number). In addition, if provided by the calling
- party, the network should be capable of transmitting a sub\(hyaddress.
- .PP
- The network to which the calling party belongs should attempt to
- ensure that enough digits are transmitted to enable the called party to
- return the call, based on the calling number presented.
- .RT
- .sp 1P
- .LP
- 3.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 3.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- This supplementary service is applicable to all telecommunication services.
- .PP
- It is to be noted that in the Telematic services an exchange of
- terminal identification (TID) occurs at a higher layer subsequent to a
- successful call establishment.
- .PP
- For Telematic services this supplementary service shall consist only of
- the access number of the calling party and this shall be provided by the
- network. For other non\(hyvoice services this supplementary service is
- for further study. The presentation of the calling party's ISDN\(hynumber
- by Telematic
- terminals and by other non\(hyvoice terminals is for further study.
- .RT
- .sp 2P
- .LP
- 3.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.3.1
- \fIProvision/withdrawal\fR
- .sp 9p
- .RT
- .PP
- CLIP may be provided on a subscription basis or be generally
- available. CLIP may be withdrawn at the request of the subscriber or by the
- network provider for administrative reasons.
- .RT
- .sp 2P
- .LP
- 3.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.3.2.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- CLIP is activated on provision and deactivated on withdrawal. No
- information needs to be registered with the network for this supplementary
- service.
- .RT
- .sp 1P
- .LP
- 3.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- The number presented shall unambiguously
- identify the access of the
- calling party. The number presented is either:
- .RT
- .LP
- i)
- completely provided by the network;
- .LP
- ii)
- completely provided by
- the calling party; or
- .LP
- iii)
- partially provided by the network with the rest provided by the calling
- party (e.g.\ the access number is provided by the network and
- the additional digits to make the number complete by the calling party).
- .PP
- Where either the complete calling number, or part of the calling number
- is initially provided by the calling party, the network shall check its
- validity. If this check is successful, then this number is used by the
- network. For complete calling numbers, this validity check shall determine
- whether the number is allocated to the access; for partially provided numbers
- this check shall, for example, determine whether the digits are within
- the
- allocated range.
- .sp 2P
- .LP
- 3.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.3.3.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 3.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- If the network check on a calling party\(hyprovided number is
- unsuccessful, the network will use the default number as the number of the
- calling party.
- .bp
- .PP
- There are two cases where the calling party number is not presented to
- the called party:
- .RT
- .LP
- i)
- when the calling party has an arrangement (see definition of Calling
- Line Identification Restriction) whereby presentation of his number is
- not allowed; and
- .LP
- ii)
- when the calling party number is not available, e.g., due to interworking
- with the analogue telephone network (PSTN).
- .PP
- In such cases no number is presented to the called party, but he shall
- receive an indication that the number of the calling party is
- unavailable.
- .sp 2P
- .LP
- 3.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.3.4.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 3.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- In some cases where a calling party has an arrangement such that
- presentation of his number is not allowed, there may be certain categories
- of called party that have the ability to override this restriction and
- have the
- calling number presented. This function is a national option.
- .PP
- Problems may occur when the calling party does not belong to the same network
- as the called party and in the calling party's network the override
- category does not exist, while, in the called party's network it does.
- A problem occurs when a calling party who restricts presentation and
- assumes that his number is \fInever\fR presented, makes a call to a called
- party
- who is in the override category.
- .PP
- The cases where the override category is applied is a national matter.
- Depending on bilateral agreement about the application of the override
- category in country B, and the \*Qpresentation not allowed\*U arrangement
- of the
- calling party in country A, country A may or may not deliver the calling
- line identification to country B. Agreements are also needed with any transit
- network.
- .RT
- .sp 1P
- .LP
- 3.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 3.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- On calls incoming from some non\(hyISDN networks, the calling number may
- be delivered to the destination ISDN without the ability to indicate
- whether presentation is allowed or not. How the ISDN should behave in this
- case is for further study.
- .PP
- From some other non\(hyISDN networks, no calling party number may be
- available to the ISDN and therefore the full number of the calling party
- cannot be given to the called party who has been provided with CLIP. In
- this situation a partial number, or a \*Qnumber unavailable\*U indication,
- is given to the called party.
- .PP
- As a national option, the originating network shall have the
- possibility to restrict any information identifying the calling party from
- being forwarded to another network. If a destination network receives a
- calling party ISDN number without any indication of presentation allowed
- or restricted, the destination network (host network) will act according
- to its own rules and regulations.
- .RT
- .sp 2P
- .LP
- 3.6
- \fIInteraction with other supplementary services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 3.6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- If an ISDN user(s) who has subscribed to the Call Waiting service at his
- B access, has been given a call waiting indication and has subscribed to
- the CLIP service, then the calling party's number shall be presented to the
- ISDN user(s) at B at the time the call waiting indication is given. The
- presentation of the CLIP information shall be the same as when the ISDN
- user(s) at B receives a normal call.
- .bp
- .RT
- .sp 1P
- .LP
- 3.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- Refer to Recommendation I.252, \(sc 1.6.5, interaction with CLIP.
- .RT
- .sp 1P
- .LP
- 3.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.4
- \fIConnected Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- Not relevant.
- .RT
- .sp 1P
- .LP
- 3.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- The calling line identification will not be presented if the
- calling user has an arrangement to inhibit the presentation of his number to
- the called party. The only occasion when a user subscribing to CLIP can take
- precedence over CLIR is when the user is in an override category. This is a
- national option.
- .RT
- .sp 1P
- .LP
- 3.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.8
- \fIConference Calling\fR
- .sp 9p
- .RT
- .PP
- Any party that has subscribed to CLIP will receive the number of a calling
- conference controller when:
- .RT
- .LP
- \(em
- the party is to be included as a \*Qnew party\*U during the
- invocation of a conference call; or
- .LP
- \(em
- the party is being added to an existing conference
- call.
- .sp 1P
- .LP
- 3.6.9
- \fIDirect Dialling In\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 9p
- .RT
- .PP
- If an incoming call to the party to which CLIP has been provided
- has already been forwarded, then the calling party's number should be the
- number of the original calling party.
- .RT
- .sp 1P
- .LP
- 3.6.10.1
- \fICall Forwarding Busy\fR
- .sp 9p
- .RT
- .PP
- Refer to Recommendation I.252, \(sc 2.6.5, interaction with CLIP.
- .RT
- .sp 1P
- .LP
- 3.6.10.2
- \fICall Forwarding No reply\fR
- .sp 9p
- .RT
- .PP
- Refer to Recommendation I.252, \(sc 3.6.5, interaction with CLIP.
- .RT
- .sp 1P
- .LP
- 3.6.10.3
- \fICall Forwarding Unconditional\fR
- .sp 9p
- .RT
- .PP
- Refer to Recommendation I.252, \(sc 4.6.5, interaction with CLIP.
- .bp
- .RT
- .sp 1P
- .LP
- 3.6.11
- \fILine Hunting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- The Line Hunting service occurs before CLIP. The Line Hunting service would
- first provide a selection of an interface for presentation of a call.
- Once the service selects an interface, normal call processing would occur
- including the presentation of the calling party's number to a selected
- interface who has subscribed to CLIP.
- .RT
- .sp 1P
- .LP
- 3.6.12
- \fIThree\(hyParty service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- Refer to \(sc 2.6.5 above, interaction with CLIP.
- .RT
- .sp 1P
- .LP
- 3.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.6.16
- \fIAdvice of Charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 3.7
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description for this service is shown in
- Figure\ 1/I.251.
- .RT
- .sp 2P
- .LP
- \fB4\fR I.251.4\ \(em
- \fBCalling Line Identification Restriction\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Calling Line Identification Restriction (CLIR) is a supplementary service
- offered to the calling party to restrict presentation of the calling
- party's ISDN number and sub\(hyaddress to the called party.
- .RT
- .sp 2P
- .LP
- 4.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- When CLIR is applicable and activated, the originating node
- provides the destination node with a notification that the calling party's
- ISDN number and any sub\(hyaddress information are not allowed to be presented
- to the called party. In this case no calling party number is included in
- the call
- offering to the called party's installation.
- .PP
- \fINote\fR \ \(em\ When CLIR is subscribed to, some network providers may not
- wish to send the originating identity of the calling customer to other
- network providers.
- .bp
- .RT
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 1/I.251, p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 1/I.251 (suite), (feuillet 2 sur 2), p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .sp 1P
- .LP
- 4.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 4.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- None identified, i.e., this supplementary service is applicable to all
- telecommunication services.
- .RT
- .sp 2P
- .LP
- 4.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.3.1
- \fIProvision/withdrawal\fR
- .sp 9p
- .RT
- .PP
- CLIR can be provided on a subscription basis or can be generally
- available.
- .PP
- As a network provider option, CLIR can be offered with several
- subscription options. The options apply separately to each ISDN number.
- Subscription options are summarized below:
- .RT
- .LP
- .sp 1
- \fISubscription option
- \fIValues\fR CLIR mode
- \(em
- permanent (active for all calls)
-
- \(em
- temporary (specified by user per call)
- Default
- \(em
- presentation restricted
- (only for temporary mode)
- \(em
- presentation not restricted
-
- .PP
- It is a network provider option to specify either or both of the above
- options for all subscribers, for instance, in an exchange or network.
- .sp 2P
- .LP
- 4.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.3.2.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- If subscribed to in the permanent mode, CLIR is always activated. If subscribed
- to on a temporary basis, CLIR is activated upon explicit request for the
- service, or on default, on a particular call and is deactivated after that
- call.
- .RT
- .sp 1P
- .LP
- 4.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- If the called party subscribes to Calling Line Identification
- Presentation and the calling party has CLIR activated, the called party
- shall receive an indication that the calling party number is not available.
- .RT
- .sp 2P
- .LP
- 4.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.3.3.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- No exceptional procedures identified.
- .RT
- .sp 1P
- .LP
- 4.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- No exceptional procedures identified.
- .bp
- .RT
- .sp 2P
- .LP
- 4.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.3.4.1
- \fIActivation/deactivation/registration\fR
- .sp 9p
- .RT
- .PP
- No alternative procedures identified.
- .RT
- .sp 1P
- .LP
- 4.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- Certain countries may define categories of subscribers that have
- the ability to override the presentation restriction and have the calling
- party's ISDN number and any sub\(hyaddress presented (e.g.,\ the police).
- .PP
- The ability to have such an override option is a national matter.
- .PP
- When a call originates in one ISDN and terminates in another ISDN and CLIR
- is applied, the rules and regulations of the destination network (the host
- network) should apply. For example, if the override category is not applicable
- in the originating network but it is in the destination network, a call
- with
- CLIR applied can still be overridden in the destination network, whenever
- information on the calling line is available for this network.
- .RT
- .sp 1P
- .LP
- 4.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 4.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- On calls to or via non\(hyISDNs, it cannot be assured that a CLIR
- indication can be carried to the destination network. As a national option
- the originating network shall have the possibility to restrict any information
- identifying the calling party from being forwarded to the destination network
- when CLIR is applicable. If a network receives a calling party ISDN number
- without any indication of presentation allowed or restricted, the destination
- network (the host network) will act according to its rules and
- regulations.
- .RT
- .sp 2P
- .LP
- 4.6
- \fIInteraction with other supplementary services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- Assume that a call from a user at C, who has subscribed to the CLIR
- service, invokes Call Waiting at a user(s) at B. The user(s) at B would
- receive a call waiting indication but would not receive the number of the
- calling user at C when the call waiting indication is given.
- .RT
- .sp 1P
- .LP
- 4.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- Assume that a user A has an established call with user B and wishes to
- transfer this call with user\ B to user\ C. If user\
- A has subscribed to CLIR, then user\ C shall not receive a calling number
- when user\ A invokes any call
- transfer procedure. If user\ B has subscribed to CLIR, then user\ C shall not
- receive a calling number during the transfer of user\ B to user\ C.
- .RT
- .sp 1P
- .LP
- 4.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.4
- \fIConnected Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 4.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- CLIR will take precedence over Calling Line Identification
- Presentation (CLIP).
- .PP
- The only occasion when a user subscribing to CLIP can take precedence over
- CLIR is when the user has an override category. This is a national
- option.
- .RT
- .sp 1P
- .LP
- 4.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- Not relevant.
- .RT
- .sp 1P
- .LP
- 4.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.8
- \fIConference Calling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.9
- \fIDirect\(hyDialling\(hyIn\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 2P
- .LP
- 4.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 4.6.10.1
- \fICall Forwarding Busy\fR
- .sp 9p
- .RT
- .PP
- When CLIR is applicable and activated, the calling party's
- ISDN\(hynumber will not be presented to the \*Qforwarded\(hyto\*U user
- unless this user is in an override category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 4.6.10.2
- \fICall Forwarding No Reply\fR
- .sp 9p
- .RT
- .PP
- When CLIR is applicable and activated, the calling party's
- ISDN\(hynumber will not be presented to the \*Qforwarded\(hyto\*U user
- unless this user is in an override category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 4.6.10.3
- \fICall Forwarding Unconditional\fR
- .sp 9p
- .RT
- .PP
- When CLIR is applicable and activated, the calling party's
- ISDN\(hynumber will not be presented to the \*Qforwarded\(hyto\*U user
- unless this user is in an override category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 4.6.11
- \fILine Hunting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.12
- \fIThree\(hyParty Service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 4.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.6.16
- \fIAdvice of Charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 4.7
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description for this service is shown in
- Figure\ 1/I.251.
- .RT
- .sp 2P
- .LP
- \fB5\fR I.251.5\ \(em
- \fBConnected Line Identification Presentation\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Connected Line Identification Presentation (COLP) is a
- supplementary service offered to the calling party which provides the connected
- party's ISDN\(hynumber to the calling party.
- .RT
- .sp 2P
- .LP
- 5.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- When COLP is applicable and activated, the network provides the
- calling party with the number of the connected party when the connected
- party answers the incoming call. The network should be capable of transmitting
- at
- least 15 digits (maximum length of an ISDN number).
- .PP
- \fINote\fR \ \(em\ The possibility of enhancing this service to provide the
- called party number before the called party answers the call is for further
- study.
- .RT
- .sp 1P
- .LP
- 5.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 5.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- This supplementary service is applicable to all telecommunication services.
- .PP
- It is to be noted that in the Telematic services an exchange of
- Terminal Identification (TID) occurs at a higher layer subsequent to a
- successful call establishment.
- .PP
- For Telematic services this supplementary service shall consist only of
- the access number of the connected party and this shall be provided by
- the network. For other non\(hyvoice services this supplementary service
- is for further study. The presentation of the connected party's ISDN number
- by Telematic
- terminals and by other non\(hyvoice terminals is for further study.
- .RT
- .sp 2P
- .LP
- 5.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.3.1
- \fIProvisionB/Fwithdrawal\fR
- .sp 9p
- .RT
- .PP
- The COLP supplementary service may be provided on a subscription
- basis or be generally available.
- .PP
- COLP may be withdrawn at the request of the subscriber or by the
- network provider for administrative reasons.
- .bp
- .RT
- .sp 2P
- .LP
- 5.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.3.2.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- COLP is activated on provision and deactivated on withdrawal.
- .PP
- No information needs to be registered with the network for this
- supplementary service.
- .RT
- .sp 1P
- .LP
- 5.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- The number presented shall unambiguously identify the access of the connected
- party. The number presented is either:
- .RT
- .LP
- i)
- completely provided by the network;
- .LP
- ii)
- completely provided by the connected party; or
- .LP
- iii)
- partially provided by the network with the rest provided by the connected
- party (e.g.\ the access number is provided by the network and the additional
- digits to make the number complete by the connected
- party).
- .PP
- Where either the complete connected number, or part of the
- connected number is initially provided by the connected party, the network
- shall check its validity. If this check is successful then this number
- is used by the network.
- .sp 2P
- .LP
- 5.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.3.3.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 5.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- There are two cases where the connected party number is not
- presented to the calling party:
- .RT
- .LP
- i)
- when the connected party has an arrangement whereby
- presentation of his number is not allowed (see definition of Connected
- Line Identification Restriction); or
- .LP
- ii)
- when the connected party number is not available (e.g.\ due to interworking
- with the analogue telephone network (PSTN)).
- .PP
- In such cases the calling party shall be given a number
- unavailable indication.
- .PP
- If the network check on the connected party provided number is
- unsuccessful, the network default number will be used instead.
- .RT
- .sp 2P
- .LP
- 5.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.3.4.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 5.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- In some cases where a connected party has an arrangement such that presentation
- of his number is not allowed, there may be certain categories of calling
- party that have the ability to override this restriction and have the connected
- number presented. This function is a national matter.
- .PP
- Problems may occur when the connected party does not belong to the
- same network as the calling party and in the connected party's network the
- override category
- does not exist, while in the calling party's network, it does exist. A
- problem occurs when a connected party who restricts
- presentation and assumes that his number is \fInever\fR presented, receives
- a call from a calling party who is in the override category.
- .PP
- The cases where the override category is applied is a national
- matter. Depending on bilateral agreement about the application
- of the override category in country A, and the presentation not allowed
- arrangement of the connected party in country B, country B may or may not
- deliver the connected line identification to country A. Agreements are also
- needed with any transit network.
- .bp
- .RT
- .sp 1P
- .LP
- 5.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 5.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- On calls destined to some non\(hyISDN networks, the connected number may
- be delivered to the originating ISDN without the ability to indicate
- whether presentation is allowed or not. How the ISDN should behave in this
- case is for further study.
- .PP
- On calls destined to some other non\(hyISDN networks, no connected party
- number may be available to the ISDN and therefore the full number of the
- connected party cannot be given to the calling party who has been provided
- with COLP. In this situation a partial number shall be given unless no
- information is available whereupon a \*Qnumber unavailable indication\*U
- is given to the
- calling party.
- .RT
- .sp 2P
- .LP
- 5.6.
- \fIInteraction with other supplementary services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e.\ neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- Assume the situation where a user A has an established call with a user\
- B and wishes to transfer this call with user\ B to a user\ C.
- .PP
- Except in the case where user C prohibits the presentation of his
- number, user C's number shall be presented:
- .RT
- .LP
- \(em
- to user B upon successful completion of the transfer to
- user\ C (independent of the type of transfer procedure invoked by user\ A)
- provided that user\ B has subscribed to COLP;
- .LP
- \(em
- to user A when user A is using normal or explicit transfer procedures
- and has subscribed to COLP. The connected party's number will not be presented
- to user\ A if user\ A invokes the single step Call Transfer
- procedure.
- .PP
- \fINote\fR \ \(em\ The connected number presentation may not be possible
- if interworking with a non\(hyISDN network is invoked in the call transfer.
- .sp 1P
- .LP
- 5.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- Not applicable.
- .RT
- .sp 1P
- .LP
- 5.6.4
- \fIConnected Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- The connected line identification will not be presented if the
- connected user has subscribed to COLR.
- .RT
- .sp 1P
- .LP
- 5.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 5.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.6.8
- \fIConference Calling\fR
- .sp 9p
- .RT
- .PP
- A conference controller who has also subscribed to COLP should be presented
- with the connected party's number when that party is either part of the
- initial activation of the conference or is added as a new conferee to an
- existing conference.
- .PP
- Conferees in an existing conference who have subscribed to COLP
- will not receive a new party's number whenever a conference controller
- adds a new party to the conference.
- .RT
- .sp 1P
- .LP
- 5.6.9
- \fIDirect\(hyDialling\(hyIn\fR
- .sp 9p
- .RT
- .PP
- For further study.
- .RT
- .sp 2P
- .LP
- 5.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 5.6.10.1
- \fICall Forwarding Busy (CFB)\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .PP
- Assume a calling user A, who has subscribed to COLP, places a call to a
- user\ B who is busy and this call is forwarded to a user\ C. If user\ B
- has also subscribed to a notification option with his CFB service, calling
- user\ A may
- receive the forwarded\(hyto user\ C's number with the notification of the
- forwarding. In any event, assuming user\ C answers the call, user\ C's number
- will be returned to user\ A unless user\ C has subscribed to COLR.
- .RT
- .sp 1P
- .LP
- 5.6.10.2
- \fICall Forwarding No Reply (CFNR)\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- Assume a calling user A, who has subscribed to COLP, places a call
- to a user\ B who has subscribed to the CFNR service, and who does not reply
- to the call within the subscribed time interval. If user\ B has also subscribed
- to
- .PP
- a notification option with his CFNR service, calling user\ A may receive the
- forwarded\(hyto user\ C's number with the notification of the forwarding.
- In any
- event, assuming user\ C answers the call, user\ C's number will be returned to
- user\ A unless user\ C has subscribed to COLR.
- .RT
- .sp 1P
- .LP
- 5.6.10.3
- \fICall Forwarding Unconditional (CFU)\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- Assume a calling user A, who has subscribed to COLP, places a call to a
- user\ B who has subscribed to the CFU service. This call to user\ B would
- then be forwarded to user\ C. If user\ B has also subscribed to a notification
- option with his CFU service, calling user\ A may receive the forwarded\(hyto
- user\ C's
- number with the notification of the forwarding. In any event, assuming
- user\ C answers the call, user\ C's number will be returned to user\ A
- unless user\ C has subscribed to COLR.
- .RT
- .sp 1P
- .LP
- 5.6.11
- \fILine Hunting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 5.6.12
- \fIThree\(hyParty Service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the the other supplementary
- service.
- .RT
- .sp 1P
- .LP
- 5.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- Assume user A, who has subscribed to COLP, places a call to a
- user\ B to whom the network is applying the MSN service. Assuming user\ B
- answers the call, the connected number at\ B (which may be identical to the
- called number) will be returned to user\ A unless user\ B has subscribed
- to COLR. Other interactions are for further study.
- .RT
- .sp 1P
- .LP
- 5.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.6.16
- \fIAdvice of charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 5.7
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description for this service is shown in
- Figure\ 2/I.251.
- .RT
- .sp 2P
- .LP
- \fB6\fR I.251.6\ \(em
- \fBConnected Line Identification Restriction\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.1
- \fIDefinition\fR
- .sp 9p
- .RT
- .PP
- Connected Line Identification Restriction (COLR) is a
- supplementary service offered to the connected party to restrict presentation
- of the connected party's ISDN\(hynumber to the calling party.
- .RT
- .sp 2P
- .LP
- 6.2
- \fIDescription\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.2.1
- \fIGeneral description\fR
- .sp 9p
- .RT
- .PP
- When COLR is applicable and activated, the destination node
- provides the originating node with a notification that the connected party's
- ISDN number is not allowed to be presented to the calling party. In this
- case no connected party number is included in the call connected information
- to the calling party's installation.
- .PP
- \fINote\fR \ \(em\ When COLR is subscribed to, some network providers may not
- wish to send the identity of the connected customer to other network
- providers.
- .RT
- .sp 1P
- .LP
- 6.2.2
- \fISpecific terminology\fR
- .sp 9p
- .RT
- .PP
- None identified.
- .RT
- .sp 1P
- .LP
- 6.2.3
- \fIQualifications on the applicability to telecommunication\fR
- \fIservices\fR
- .sp 9p
- .RT
- .PP
- None identified, i.e. this supplementary service is applicable to all telecommunication
- services.
- .bp
- .RT
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 2/I.251, p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .LP
- .rs
- .sp 47P
- .ad r
- \fBFigure 2/I.251 (feuillet 2 sur 2), p.\fR
- .sp 1P
- .RT
- .ad b
- .RT
- .LP
- .bp
- .sp 2P
- .LP
- 6.3
- \fIProcedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.3.1
- \fIProvisionB/Fwithdrawal\fR
- .sp 9p
- .RT
- .PP
- COLR can be provided on a subscription basis or be generally
- available.
- .PP
- As a network provider option, COLR can be offered with several
- subscription options. The options apply separately to each ISDN number.
- Subscription options are summarized below:
- .RT
- .LP
- .sp 1
- \fISubscription option\fR \fIValues\fR
- .LP
- COLR mode
- \(em
- permanent (active for all calls)
-
- \(em
- temporary (specified by user per call)
- Default
- \(em
- presentation restricted
- (only for temporary mode)
- \(em
- presentation not restricted
-
- .PP
- It is a network provider option to specify either or both of the above
- options for all subscribers, for instance, in an exchange or network.
- .sp 2P
- .LP
- 6.3.2
- \fINormal procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.3.2.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- If subscribed to in the permanent mode, COLR is always activated. If subscribed
- to on a temporary basis, COLR is activated upon explicit request for the
- service, or on default, on a particular call and is deactivated after that
- call.
- .RT
- .sp 1P
- .LP
- 6.3.2.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- If the calling party subscribes to Connected Line Identification
- Presentation and the connected party has COLR activated, the calling party
- shall receive an indication that the connected party number is not
- available.
- .RT
- .sp 2P
- .LP
- 6.3.3
- \fIExceptional procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.3.3.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- No exceptional procedures identified.
- .RT
- .sp 1P
- .LP
- 6.3.3.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- No exceptional procedures identified.
- .RT
- .sp 2P
- .LP
- 6.3.4
- \fIAlternative procedures\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.3.4.1
- \fIActivationB/FdeactivationB/Fregistration\fR
- .sp 9p
- .RT
- .PP
- No alternative procedures identified.
- .bp
- .RT
- .sp 1P
- .LP
- 6.3.4.2
- \fIInvocation and operation\fR
- .sp 9p
- .RT
- .PP
- Certain countries may define categories of subscribers that have
- the ability to override the presentation restriction and have the connected
- party's ISDN number presented (e.g.\ the police).
- .PP
- The ability to have such an override option is a national matter.
- .PP
- When a call originates in one ISDN and terminates in another ISDN and COLR
- is applied, the rules and regulations of the destination network (the host
- network) should apply. For example, if the override category is not applicable
- in the originating network but it is in the destination network, a call
- with
- COLR applied can still be overridden in the destination network, whenever
- information on the connected line is available for this network.
- .RT
- .sp 1P
- .LP
- 6.4
- \fINetwork capabilities for charging\fR
- .sp 9p
- .RT
- .PP
- This Recommendation does not cover charging principles. Future
- Recommendations in the D\(hySeries are expected to contain that information.
- .PP
- It shall be possible to charge the subscriber accurately for the
- service.
- .RT
- .sp 1P
- .LP
- 6.5
- \fIInterworking requirements\fR
- .sp 9p
- .RT
- .PP
- On calls to or via non\(hyISDNS, it cannot be assured that a COLR
- indication can be carried to the originating network. As a national option
- the destination network shall have the possibility to restrict any information
- identifying the connected party from being returned to the originating
- network when COLR is applicable. If a network receives a connected party
- ISDN number
- without any indication of presentation allowed or restricted, the originating
- network (the host network) will act according to its rules and
- regulations.
- .RT
- .sp 2P
- .LP
- 6.6
- \fIInteraction with other supplementary services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.1
- \fICall Waiting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .PP
- Assume that a call from a user C, invokes Call Waiting at
- user\ B, who has subscribed to the COLR service. User\ B would receive a call
- waiting indication but would not have his number returned when the call
- waiting indication is given.
- .RT
- .sp 1P
- .LP
- 6.6.2
- \fICall Transfer\fR
- .sp 9p
- .RT
- .PP
- Assume that user A has an established call with user\ B and wishes to transfer
- this call with user\ B to a user\ C.
- .PP
- If user\ C has subscribed to COLR, then user A shall not receive the
- connected number when user\ A invokes any call transfer procedure. If user\
- C has subscribed to COLR, then user\ B shall not receive the connected
- number during the transfer of user\ B to user\ C.
- .RT
- .sp 1P
- .LP
- 6.6.3
- \fIConnected Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- COLR will take precedence over COLP. The only occasion when a
- user subscribing to COLP can take precedence over COLR is when the user
- is in an override category. This is a national option.
- .RT
- .sp 1P
- .LP
- 6.6.4
- \fIConencted Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- Not relevant.
- .RT
- .sp 1P
- .LP
- 6.6.5
- \fICalling Line Identification Presentation\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 6.6.6
- \fICalling Line Identification Restriction\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.7
- \fIClosed User Group\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.8
- \fIConference Call\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.9
- \fIDirect\(hyDialling\(hyIn\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 2P
- .LP
- 6.6.10
- \fICall Diversion (i.e. Call Forwarding) services\fR
- .sp 1P
- .RT
- .sp 1P
- .LP
- 6.6.10.1
- \fICall Forwarding Busy\fR
- .sp 9p
- .RT
- .PP
- When the diverted call is finally answered, no connected number
- will be presented to the calling party unless this party is in an override
- category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 6.6.10.2
- \fICall Forwarding No Reply\fR
- .sp 9p
- .RT
- .PP
- When the diverted call is finally answered, no connected number
- will be presented to the calling party unless this party is in an override
- category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 6.6.10.3
- \fICall Forwarding Unconditional\fR
- .sp 9p
- .RT
- .PP
- When the diverted call is finally answered, no connected number
- will be presented to the calling party unless this party is in an override
- category. The latter is a national option.
- .RT
- .sp 1P
- .LP
- 6.6.11
- \fILine Hunting\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the operation of
- the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.12
- \fIThree\(hyParty Service\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.13
- \fIUser\(hyto\(hyUser Signalling\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.14
- \fIMultiple Subscriber Number\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.6.15
- \fICall Hold\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .bp
- .RT
- .sp 1P
- .LP
- 6.16
- \fIAdvice of charge\fR
- .sp 9p
- .RT
- .PP
- No impact, i.e. neither supplementary service affects the
- operation of the other supplementary service.
- .RT
- .sp 1P
- .LP
- 6.7
- \fIDynamic description\fR
- .sp 9p
- .RT
- .PP
- The dynamic description for this service is shown in
- Figure\ 2/I.251.
- .RT
- .sp 2P
- .LP
- \fB7\fR I.251.7\ \(em
- \fBMalicious Call Identification\fR
- .sp 1P
- .RT
- .PP
- This service, having been identified, now requires further study, its description
- is not yet included.
- .RT
- .sp 1P
- .LP
- \fB8\fR I.251.8\ \(em
- \fBSub\(hyaddressing\fR
- .sp 9p
- .RT
- .PP
- This service, having been identified, now requires further study, its description
- is not yet included.
- .RT
- .LP
- .rs
- .sp 38P
- .sp 2P
- .LP
- \fBMONTAGE : RECOMMANDATION I.252 SUR LE RESTE DE CETTE PAGE\fR
- .sp 1P
- .RT
- .LP
- .bp
-