ÿWPCL ûÿ2BJ|xÐ ` ÐÐÌÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿH øÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÌÐÐ °°°è ÐÁàAÁÑ Âx„|ü@Ž ÑÐ Å°6Ø'°6Ø'ŠЃ Áà=ÁÓÓÃÃCONTENTSÄă Ð ( Ð1. I.500 © General structure of the ISDN interworking Recommendations. 2. I.510 © Definitions and general principles for ISDN interworking. 3. I.511 © ISDN to ISDN layer 1 internetwork interface. 4. I.515 © Parameter exchange for ISDN interworking. 5. I.520 © General arrangements for network interworking between ISDNs. 6. I.530 © Network interworking between an ISDN and a public©switched telephone network (PSTN). 7. I.540 © (see X.321). 8. I.550 © (see X.325). 9. I.560 © (see U.202). Õ.I Ð ` Ð(3296) .ÕÕ-IÐ ` Ð(3296) -Õ ÕJÏ ÁàXIÁ©  ©ƒ ÁàXEÁAP IX©147©Eƒ ÁàXJÁƒJÕÕIÏ ÁàXIÁ©  ©ƒ ÁàXEÁAP IX©147©Eƒ ÁàXJÁƒIÕÐ °èè Ð2.4ÁHÁÃÃProtocol levelÄÄ Ð À ÐÁHÁIn the protocol level, the protocols listed are those that appear at the Reference points KÃÃxÄÄ and NÃÃxÄÄ. ÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀ 2.5ÁHÁRecommendations which relate to interworking are shown in Ð X ÐFigure 1/I.500 and are assigned to the levels in section 2. As the contents of some Recommendations cover more than one level these Recommendations appear at each level to which they relate. 3.ÁHÁÃÃReferencesÄÄ ÁHÁThe 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. 3.1ÁHÁÃÃInterworkingÄÄ ÐÌÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿH ø` ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÌÐ ÁHÁX.300©SeriesÂx` ÂInterworking between public networks, and between public networks and other networks for the provision of data transmission services ÆÆ ÁHÁI.324Á øÁÁ` ÁÁØ ÁISDN architecture functional model ÁHÁI.340Á øÁÁ` ÁÁØ ÁConnection types/elements for ISDN©ISDN interworking ÁHÁX.31Á øÁÁ` ÁÁØ ÁSupport of packet©mode terminal equipment by an ISDN ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.81Á øÁÁ` ÁÁØ ÁInterworking between an ISDN circuit switched and a circuit switched public data network (CSPDN)ÆÆ 3.2ÁHÁÃÃServices and network capabilitiesÄÄ ÁHÁX.1Á   ÁÁ øÁÂh` ÂInternational user classes of service in public data networks and integrated services digital networks (ISDNs)ÆÆ ÁHÁX.2Á   ÁÁ øÁÂh` ÂInternational data transmission services and optional user facilities in public data networks and ISDNsÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.10Á øÁÁ` ÁÁØ ÁCategories of access for data terminal equipment (DTE) to public data transmission servicesÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.122Á øÁÁ` ÁÁØ ÁFramework for providing additional packet©mode bearer servicesÆÆ ÁHÁI.200©SeriesÂx` ÂService aspects supported by an ISDN ÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.310Á øÁÁ` ÁÁØ ÁISDN © Network functional principlesÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.320Á øÁÁ` ÁÁØ ÁISDN protocol reference modelÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.325Á øÁÁ` ÁÁØ ÁReference configurations for ISDN connection typesÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.411Á øÁÁ` ÁÁØ ÁISDN user©network interfaces © reference configurationsÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.412Á øÁÁ` ÁÁØ ÁISDN user©network interfacesÆÆ ÁHÁÁ  ÁÁ øÁÁ` ÁInterface structures and access capabilities ÁHÁI.420Á øÁÁ` ÁÁØ ÁBasic rate user©network interface ÁHÁI.421Á øÁÁ` ÁÁØ ÁPrimary rate user©network interface ÁHÁI.441Á øÁÁ` ÁÁØ ÁISDN user©network interface data link layer ÁAðBÁ(Q.921)ÁI°"JÁÁJ(#KÁspecification Ô Ù&ÔŒÁHÁI.451Á øÁÁ` ÁÁØ ÁISDN user©network interface layer 3 specification ÁHÁ(Q.931) 3.3ÁHÁÃÃSignallingÄÄ ÁHÁQ.700Á øÁÁ` ÁÁØ ÁNetwork protocols (MTP, ISUP, etc.) ÁHÁQ.120©Q.180Á` ÁÁØ ÁSpecification of Signalling Systems No. 4 and No. 5. ÁHÁQ.251©Q.300Á` ÁÁØ ÁSpecification of Signalling System No. 6 ÁHÁQ.310©Q.490Á` ÁÁØ ÁSpecification of Signalling Systems R1 and R2 ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.75Á øÁÁ` ÁÁØ ÁPacket switched Signalling System between public networks providing data transmission servicesÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.25Á øÁÁ` ÁÁØ ÁInterface between data terminal equipment (DTE) and data circuit equipment (DCE) for terminals operating in the packet©mode and connected to public data networks by dedicated circuitsÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.71Á øÁÁ` ÁÁØ ÁDecentralized terminal and transit control signalling system on international circuits between synchronous data networksÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁU.12Á øÁÁ` ÁÁØ ÁTerminal and transit control signalling system for telex and similar services on international circuits (type D signalling)ÆÆ 3.4ÁHÁÃÃRate adaptationÄÄ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.460Á øÁÁ` ÁÁØ ÁMultiplexing, rate adaptation and support of existing interfacesÆÆ ÁHÁI.461 (X.30)Âx` ÂSupport of X.21, X.21bis and X.20bis based DTEs by an ISDNÆÆ ÁHÁI.462 (X.31)Âx` ÂSupport of packet©mode terminal equipment by an ISDNÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.463 (V.110)ÁØ ÁSupport of DTEs with V©Series type interfaces by an ISDNÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.464Á øÁÁ` ÁÁØ ÁMultiplexing, rate adaptation and support of existing interfaces for restricted 64 kbit/s transfer capabilityÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁV.120Á øÁÁ` ÁÁØ ÁSupport by ISDN DTEs with V©Series type interfaces with provision for statistical multiplexingÆÆ 3.5ÁHÁÃÃNumberingÄÄ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.121Á øÁÁ` ÁÁØ ÁInternational numbering plan for public data networksÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁX.122Á øÁÁ` ÁÁØ ÁNumbering plan interworking between a PSPDN and an ISDN or PSTN in the short©termÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.331 (E.164)ÁØ ÁNumbering plan for the ISDN eraÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁE.166Á øÁÁ` ÁÁØ ÁNumbering plan interworking in the ISDN eraÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.330Á øÁÁ` ÁÁØ ÁISDN numbering and addressing principlesÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁI.332Á øÁÁ` ÁÁØ ÁNumbering principles for interworking between ISDNs and dedicated networks with different numbering plansÆÆ ÂHHÂÂX  ÂÂX øÂÂh` ÂÁ€øÁÁ€  ÁÁ€ HÁÁ€ÁÁHÁF.69Á øÁÁ` ÁÁØ ÁPlan for telex destination codesÆÆ