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- CONTENTS
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- 1. I.500 - General structure of the ISDN interworking Recommenda-
- tions.
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- 2. I.510 - Definitions and general principles for ISDN interworking.
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- 3. I.511 - ISDN to ISDN layer 1 internetwork interface.
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- 4. I.515 - Parameter exchange for ISDN interworking.
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- 5. I.520 - General arrangements for network interworking between
- ISDNs.
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- 6. I.530 - Network interworking between an ISDN and a public-
- switched telephone network (PSTN).
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- 7. I.540 - (see X.321).
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- 8. I.550 - (see X.325).
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- 9. I.560 - (see U.202).
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- 2.4 Protocol level
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- In the protocol level, the protocols listed are those that appear at the Ref-
- erence points Kx and Nx.
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- ûûûûûûûûûû
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- 2.5 Recommendations which relate to interworking are shown in
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- Figure1/I.500 and are assigned to the levels in section 2. As the contents
- of some Recommendations cover more than one level these Recommen-
- dations appear at each level to which they relate.
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- 3. References
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- The References are general to all I.500 Recommendations and are to be
- read in conjunction with Figure 1/I.500, where the organization of ISDN
- interworking Recommendations is shown.
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- 3.1 Interworking
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- X.300-Series Interworking between public networks, and between public
- networks and other networks for the provision of data transmission ser-
- vices
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- I.324 ISDN architecture functional model
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- I.340 Connection types/elements for ISDN-ISDN interwork-
- ing
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- X.31 Support of packet-mode terminal equipment by an ISDN
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- X.81 Interworking between an ISDN circuit switched and a
- circuit switched public data network (CSPDN)
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- 3.2 Services and network capabilities
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- X.1 International user classes of service in public data net-
- works and integrated services digital networks (ISDNs)
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- X.2 International data transmission services and optional
- user facilities in public data networks and ISDNs
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- X.10 Categories of access for data terminal equipment (DTE)
- to public data transmission services
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- I.122 Framework for providing additional packet-mode bearer
- services
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- I.200-Series Service aspects supported by an ISDN
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- I.310 ISDN - Network functional principles
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- I.320 ISDN protocol reference model
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- I.325 Reference configurations for ISDN connection types
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- I.411 ISDN user-network interfaces - reference configurations
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- I.412 ISDN user-network interfaces
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- Interface structures and access capabilities
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- I.420 Basic rate user-network interface
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- I.421 Primary rate user-network interface
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- I.441 ISDN user-network interface data link layer (Q.921)
- specification
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- I.451 ISDN user-network interface layer 3 specification
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- (Q.931)
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- 3.3 Signalling
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- Q.700 Network protocols (MTP, ISUP, etc.)
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- Q.120-Q.180 Specification of Signalling Systems No. 4 and No. 5.
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- Q.251-Q.300 Specification of Signalling System No. 6
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- Q.310-Q.490 Specification of Signalling Systems R1 and R2
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- X.75 Packet switched Signalling System between public net-
- works providing data transmission services
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- X.25 Interface between data terminal equipment (DTE) and
- data circuit equipment (DCE) for terminals operating
- in the packet-mode and connected to public data net-
- works by dedicated circuits
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- X.71 Decentralized terminal and transit control signalling sys-
- tem on international circuits between synchronous
- data networks
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- U.12 Terminal and transit control signalling system for telex
- and similar services on international circuits (type D
- signalling)
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- 3.4 Rate adaptation
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- I.460 Multiplexing, rate adaptation and support of existing
- interfaces
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- I.461 (X.30) Support of X.21, X.21bis and X.20bis based DTEs by an
- ISDN
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- I.462 (X.31) Support of packet-mode terminal equipment by an ISDN
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- I.463 (V.110) Support of DTEs with V-Series type interfaces by an ISDN
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- I.464 Multiplexing, rate adaptation and support of existing
- interfaces for restricted 64 kbit/s transfer capability
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- V.120 Support by ISDN DTEs with V-Series type interfaces
- with provision for statistical multiplexing
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- 3.5 Numbering
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- X.121 International numbering plan for public data networks
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- X.122 Numbering plan interworking between a PSPDN and an
- ISDN or PSTN in the short-term
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- I.331 (E.164) Numbering plan for the ISDN era
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- E.166 Numbering plan interworking in the ISDN era
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- I.330 ISDN numbering and addressing principles
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- I.332 Numbering principles for interworking between ISDNs
- and dedicated networks with different numbering
- plans
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- F.69 Plan for telex destination codes
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