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IMPORT
R:\\ART\\W INTERNATIONAL TELECOMMUNICATION UNION
MF\\ITU.WM
F \*
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t
CCITT D.91
THE INTERNATIONAL
TELEGRAPH AND TELEPHONE
CONSULTATIVE COMMITTEE
GENERAL TARIFF PRINCIPLES
CHARGING AND ACCOUNTING IN
INTERNATIONAL TELECOMMUNICATIONS
SERVICES
TRANSMISSION IN ENCODED FORM
OF MARITIME TELECOMMUNICATIONS
ACCOUNTING INFORMATION
Recommendation D.91
IMPORT Geneva, 1991
R:\\ART\\
WMF\\CCIT
TRUF.WMF
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mergeform
at
Printed in Switzerland
FOREWORD
The CCITT (the International Telegraph and Telephone Consultative
Committee) is a permanent organ of the International Telecommunication Union
(ITU). CCITT is responsible for studying technical, operating and tariff
questions and issuing Recommendations on them with a view to standardizing
telecommunications on a worldwide basis.
The Plenary Assembly of CCITT which meets every four years, establishes
the topics for study and approves Recommendations prepared by its Study Groups.
The approval of Recommendations by the members of CCITT between Plenary
Assemblies is covered by the procedure laid down in CCITT Resolution No. 2
(Melbourne, 1988).
Recommendation D.91 was prepared by Study Group III and was approved under
the Resolution No. 2 procedure on the 22 of March 1991.
___________________
CCITT NOTE
In this Recommendation, the expression "Administration" is used for
conciseness to indicate both a telecommunication Administration and a recognized
private operating agency.
F ITU 1991
All rights reserved. No part of this publication may be reproduced or utilized in
any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the ITU.
PAGE BLANCHE
Recommendation D.91
Recommendation D.91
TRANSMISSION IN ENCODED FORM OF MARITIME TELECOMMUNICATIONS
ACCOUNTING INFORMATION
(Melbourne, 1988, revised 1990)
1 Introduction
1.1 Under the provision of Recommendation D.90, Administrations engage in
international accounting for radiocommunications handled each month.
1.2 A growing number of Administrations are processing this monthly
international accounting data using computer based accounting systems.
Information is drawn from traffic history tapes or manually encoded from data
such as inward international accounts and statistical summaries prepared by
manual abstraction from copies of traffic tickets.
1.3 It is usual at present to complete computer processing by producing
conventional printed accounts following the specifications described in the
various accounting Recommendations (D.90). Where the receiving Administration
also uses computer facilities, however, this information has to be re-encoded for
processing through its system.
1.4 Transmission of data in encoded form avoids the decoding/re-encoding step.
It also offers a faster transfer of information than by printed forms through the
mail. The latter remains true even if the forwarding Administration has prepared
the data by manual/mechanical means.
2 Aim
2.1 The aim of this Recommendation is:
2.1.1 To enable Administrations using computer based accounting systems to
transfer information to each other in encoded form, without the need for decoding
into conventional printed form and subsequent encoding into machine-readable
form.
2.1.2 To enable other Administrations, if they so desire, to benefit from the
greater efficiency of speedier transfer of information to them and to prepare
themselves for the introduction of computer working by introducing transmission
of data in encoded form in advance of installation of a computer.
2.1.3 To facilitate provision of printed output from computer based systems in a
format suitable for manual/mechanical processing where it is to be forwarded to
Administrations not using computer facilities.
2.1.4 To facilitate provision of printed output from manual/mechanical
accounting systems in a format suitable for data encoding where it is to be
forwarded to Administrations employing computer processing.
styleref head_footRecommendation
D.91 PAGE9
3 Method
3.1 Data record
3.1.1 The aim of this Recommendation can be met by use of a standard data record
format for the various elements of information to be transferred. The information
elements and their sequence must be compatible with the provisions of the various
accounting Recommendations so that decoding to and encoding from printed output
for exchange of information with Administrations using manual/mechanical systems
will be as simple as possible.
3.1.2 Between Administrations operating computer based accounting systems,
adherence to the standard data record format for data transmission purposes will
ensure that only one interface programme will be needed to enable any one
computer installation to generate suitable input for, and accept output from,
other computer installations.
3.2 Data transfer
3.2.1 Procedures already exist for transfer of data in conventional (printed)
form through the mails. Data in encoded form could be transferred by mailing of
magnetic or paper tapes, paper tape transmission by telex or data transmission
over circuits utilized for this purpose.
3.2.2 While mailing of tapes avoids the encoding task for the receiving
Administration there can be delays and loss in transit. In addition, there can be
difficulties caused by the fragility of paper tape and incompatibility of various
forms of magnetic tape recording.
3.2.3 Transfer of data via the telex service using paper tape transmission and
reception can be advantageous for Administrations whether they have computer
based accounting systems or manual/mechanical systems. As both page copy and
punched paper tape can be generated at the receiving point, users of either type
of accounting system can benefit. Page copy can be used for checking paper tape,
with the latter becoming input to a computer. Page copy can also be used as the
incoming international account avoiding the need for use of the postal service.
3.2.4 Where large volumes of data are to be exchanged, transmission over higher
speed circuits offers significant benefits. Where suitable data links are in use
for service transmissions, these could be utilized. Data terminals and modems
capable of transmission speed in the range 600 to 2400 bits per second should be
sufficient, but higher speeds could be used. For manual/mechanical systems, data
received on data terminals can be reproduced as page copy representing an
incoming international account. For computer based accounting systems, data
transmission offers the possibility of complete automation of the process by
computer-to-computer transfer.
4 Specific recommendations
4.1 It is recommended that:
4.1.1 Where possible data transferred in printed form should be replaced by data
transferred in encoded form.
4.1.2 For data transferred in encoded form, the standard data record format
detailed in Annex A should be followed.
PAGE10 styleref head_footRecommendation D.91
4.1.3 Transmission of data in encoded form should be by the following means:
a) physical transfer of magnetic tapes (the standard file structure is
given in Annex A),
b) use of data transmission over telephone circuits, dedicated circuits,
telegraph circuits or special data links.
4.1.4 Transmission methods (international packet switching service, electronic
mailbox, etc.), operating practices and technical standards should be agreed
between the Administrations concerned and should conform to the appropriate CCITT
Recommendations.
5 Code maintenance
5.1 The Secretariat of the CCITT is responsible for maintenance of the table
of service codes and the table of facility codes in Appendices I and II.
5.2 New codes can be allocated by the authority of the Director of the CCITT.
Applications should be made through the CCITT Secretariat who will arrange for
the notification of new codes in the Operational Bulletin.
ANNEX A
(to Recommendation D.91)
Monthly international accounting information
Fixed record formats
A.1 File description
A.1.1 The file has EBCDIC-format (Extended Binary Coded Decimal Interchange
Code). The length of the formatted records is 160 characters, blocked by 10.
A.1.2 The tape, which will contain a header and a trailer record, may consist of
several batches. For each accounting authority or country there may be a batch
(or, if more than one currency is involved, one batch for each currency) for each
of the following services:
ù satellite from-ship traffic;
ù terrestrial radio from-ship traffic;
ù terrestrial radio to-ship telephone and telegram traffic;
ù terrestrial radio to-ship telex traffic;
ù credit card/reversed charge from-ship traffic for both services.
Each of the traffic batches will contain an accounting authority header
record followed by the traffic items and ended by the summary record.
styleref head_footRecommendation
D.91 PAGE9
A.1.3 Record description
Fields in numeric format should be right justified with zero filling.
Fields in alphanumeric format should be left justified with space filling.
Similarly unused field should be zero or blank filled as appropriate.
A.1.3.1 Main header record
include 91-T01-E
Position Length Format Name of Contents
field
01 02 Numeric CODART Determination of record code
03 08 Alphanumeri CDAAIC AAIC of tape originator
c
11 06 Numeric CREATN Creation date of tape YYMMDD
17 20 Alphanumeri REFERN Invoice number
c
37 to ù Alphanumeri ù
160 c
PAGE10 styleref head_footRecommendation D.91
Unused field (space fill)
styleref head_footRecommendation
D.91 PAGE9
A.1.3.2 Record accounting authority
include 91-T02-E
Position Length Format Name of Contents
field
01 02 Numeric CODART Determination of record code
to 01
03 08 Alphanumeri CDAAIC AAIC of accounting authority if
c traffic code 3 or 4, of origin
(or recipient in the case of
XCF or CC calls) Administration
if traffic code 1, 2 or 5 in
field CDDIRE
11 01 Numeric CDDIRE Traffic codes:
1 = Terrestrial telephone and
telegram traffic = chargeable
to the shore customer
2 = Terrestrial telex traffic
chargeable to = the shore
customer
3 = Terrestrial traffic
chargeable to the ship
= =customer
4 = Satellite traffic
chargeable to the ship
= =customer
5 = Credit card/reversed charge
originating = =from ship (for
use only if such traffic is
= =not included in code 1
records)
12 50 Alphanumeri NATADM Name of Administration if codes
c 1, 2 or 5. Name of accounting
authority if codes 3 or 4
62 03 Alphanumeri CDCURR Monetary unit or currency of
c invoice using ISO codes e.g.,
gold franc = XFO; Special
Drawing Rights = XDR; Pound
Sterling = GBP; US
Dollar = USD; Deutsche
Mark = DEM
65
PAGE10 styleref head_footRecommendation D.91
08 Numeric RATCON Rate of conversion (zero filled
if not applicable), 1 unit of
invoice currency = XXXXXX units
of currency of settlement
73 01 Numeric DECIMN Number of decimal places in
RATCON
74 04 Numeric YEAMON Month in which the bulk of the
traffic was transmitted YYMM
78 01 Alphanumeri CDSUPP Supplement; if there are any
c charges for backdated traffic
filed before the month stated
in YEAMON, insert "s", if not
space fill
79 to ù Alphanumeri ù Unused field (spaces)
160 c
styleref head_footRecommendation
D.91 PAGE9
A.1.3.3 Record communication (traffic)
include 91-T03-E
Position Length Format Name of Contents
field
001 02 Numeric CODART Determination of record code
to 02
003 07 Alphanumeri CDCS/CES Code of coast station/CES
c
010 06 Numeric DATCOM Date of traffic format YYMMDD
016 04 Numeric TMETFC Time of commencement of traffic
HHMM (UTC), space fill if not
applicable
020 20 Alphanumeri CALSIG Call sign of vessel/ID code
c
040
PAGE10 styleref head_footRecommendation D.91
32 Alphanumeri NAMORG Origin identificationa)
c
072 32 Alphanumeri NAMDES Destination identificationa)
c
104 02 Numeric CDKING Code kind of traffic (see
Appendix I)
106 02 Numeric CDFACI Facility code
108 06 Numeric NUMWRD Number of words or duration of
call format HHMMSS
114 08 Numeric TXAMOU Amount of facility charge,
otherwise zero fill
122 10 Numeric BITNUM
styleref head_footRecommendation
D.91 PAGE9
Number of bits
132 06 Numeric MERENU Message reference number
138 01 Numeric CHARAT Charge rate: e.g.,
1 = peak;
2 = cheap;
3 = standard
139 10 Numeric TAXTOT Total amount of charge
(negative amounts possible)
149 01 Numeric DECIMN Number of decimal digits in
TXAMOU and TAXTOT
150 to ù Alphanumeri ù Unused field (spaces)
160 c
a) If possible, insert the ITU country code (1 or 3 characters) of the land
based subscriber (ships name in the
other direction). For credit card calls, the credit card number should be
shown in the origin field.
A.1.3.4 Summary record
include 91-T04-E
Position Length Format
PAGE10 styleref head_footRecommendation D.91
Name of Contents
Field
01 02 Numeric CODART Determination of record code to
03
03 16 Numeric AMTTOT Total amount (negative amounts
possible)
19 01 Numeric DECIMN Number of decimal digits in
AMTTOT
20 to ù Alphanumeri ù Unused field (spaces)
160 c
styleref head_footRecommendation
D.91 PAGE9
A.1.3.5 Trailer record
include 91-T05-E
Position Length Format Name of Contents
field
01 02 Numeric CODART Determination of record code to
99
03 02 Numeric NOBATC Number of batches
05 16 Numeric AMTTOT Total amount of all charges
21 01 Numeric DECIMN Number of decimal digits in
AMTTOT
22 to ù Alphanumeri ù Unused field (spaces)
160 c
PAGE10 styleref head_footRecommendation D.91
A.2 Characteristics and structure of the tape
A.2.1 Physical structure of recording
For recording, the ISO-Norm 1863 is to be used, except that the recording
density will be 1600 BPI.
Method of recording: EBCDIC
Record density: 1600 BPI
Number of tracks: 9
Width of tape: 1/2 inch
Interblock gap: 0.6 inch
Block prefix 3 inch.
A.2.2 Structure of tape
Mono-tape, mono-file.
A.2.3 Tape and file label
Character code for label and EBCDIC code
Volume header label: Volume 1 (see Appendix III)
First file header label and end of file label: HDR1 and EOF1 (see Appendix
IV)
Second file header label and end of file label: HDR2 and EOF2 (see
Appendix V)
styleref head_footRecommendation
D.91 PAGE9
APPENDIX I
(to Annex A to Recommendation D.91)
include 91-T06-E
Table of service codes (CDKIND)
Code Description
02 Telephone satellite automatic ù Standard A
03 Telephone satellite manual ù Standard A
04 Telephone VHF automatic
05 Telephone VHF manual
06 Telephone medium-wave automatic
07 Telephone medium-wave manual
08 Telephone short-wave automatic
09 Telephone short-wave manual
12 Telex satellite automatic ù Standard A
13 Telex satellite manual ù Standard A
14 Telex VHF automatic
15 Telex VHF manual
16 Telex medium-wave automatic
17 Telex medium-wave manual
18 Telex short-wave automatic
PAGE10 styleref head_footRecommendation D.91
19 Telex short-wave manual
22 Telegram satellite ù Standard A
23 Telegram VHF
24 Telegram medium-wave
25 Telegram short-wave
26 Telephone aeronautical ù Terrestrial
27 Telephone aeronautical ù Satellite
28 Data transmission aeronautical ù Terrestrial
29 Data transmission aeronautical ù Satellite
30 Telex multi-address parent ù Standard A
31 Telex multi-address offspring ù Standard A
32 Telegram
33 to 39 Unused
40 Telex single address ù Standard C
41 Telex multi-address parent ù Standard C
42 Telex multi-address offspring ù Standard C
43
styleref head_footRecommendation
D.91 PAGE9
PSS single address ù Standard C
44 PSS multi-address parent ù Standard C
45 PSS multi-address offspring ù Standard C
46 Telegram ù Standard C
47 Status request ù Standard C
48 Data report/poll response ù Standard C
49 to 54 ù
PAGE10 styleref head_footRecommendation D.91
APPENDIX II
(to Annex A to Recommendation D.91)
include 91-T07-E
Table of facility codes (CDFACI)
Code Description
34 Personal call
35 Reversed charge (collect) call
36 Credit card call
37 Advice of duration and charge (ADC)
38 Personal call with ADC
39 to 50 ù
51 Telex letter
52 ù
53 Voice bank
54 Data base access (telephone or telex)
APPENDIX III
(to Annex A to Recommendation D.91)
include 91-T08-E
Volume header label
Position Assignment of field Contents
1 to 4 Label identifier and Volume 1
number
5 to 10 Volume No.
styleref head_footRecommendation
D.91 PAGE9
6 characters alphanumeric
11 Access 1 character (space)
12 to 31 + 32 to 37 Reserved A (space)
38 to 50 Identification of owner 13 characters alphanumeric
51 Record density A (space)
52 to 79 Reserved A (space)
80 Version of standard label 3
81 to 160 ù Unused field (spaces)
PAGE10 styleref head_footRecommendation D.91
APPENDIX IV
(to Annex A to Recommendation D.91)
include 91-T09-E
First file header label and end of file label
Position Assignment of field Contents
1 to 4 Label identification and HDR1 EOF1
number
5 to 21 File identification All characters
alphanumeric
22 to 27 Total file identification Spaces Spaces
28 to 31 Number of file section "0001" "0001"
32 to 35 Number of file sequence "0001" "0001"
36 to 39 Number of generation "0001" "0001"
40 to 41 Version number on "00" "00"
generation
42 to 47 Creation date YYMMDD
48 to 53 Expiry date Spaces Spaces
54 Access
styleref head_footRecommendation
D.91 PAGE9
Spaces Spaces
55 to 60 Block counting Zero Block count
61 to 73 System code All characters
alphanumeric
74 to 160 Reserved field Spaces Spaces
APPENDIX V
(to Annex A to Recommendation D.91)
include 91-T10-E
Second file header label and end of file label
Position Assignment of field Contents
1 to 4 Label identifier and HDR2 EOF2
number
5 Record format "F" "F"
6 to 10 Length of block "10" "10"
11 to 15 Length of record "00160"
"00160"
16 to 50 Reserve system All characters
alphanumeric
51 to 52 Length of offset cell "00" "00"
buffer
PAGE10 styleref head_footRecommendation D.91
53 to 160 Reserved field Spaces Spaces
styleref head_footRecommendation
D.91 PAGE9
