1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 (b) that transfer of network addresses, terminal identifications and other session management functions arecovered in Recommendations specific to individual networks and telematic services;(c) that detailed provisions on TIDs and network addresses may be
2、also found in specific Telematic service andnetwork Recommendations and no modifications are necessary to the information carried by the communicationsprotocol;(d) that, from the operational viewpoint, it is acceptable for a subscriber to add selection digits to those presentedin the TID,recommendst
3、hat the following general principles on the identification of terminals in the telematic services (and, asappropriate, other terminals) should be applied to all new equipment, and to all existing equipment1).1 The TID for telematic on the PSTN shall precede the telephone country code with the escape
4、 code “9”.2 The TID for telematic terminals on the ISDN shall precede the country code with the escape code “0”.3 Table 1/F.351 shows examples of TIDs for telematic terminals on the CSPDN, PSPDN, PSTN and ISDN. Thetable also includes the dialling sequences from a terminal on one type of network to t
5、erminals on other types ofnetworks.It should be noted that it may be necessary to instruct users NOT to dial the escape code “9” for calls from PSTNand ISDN to PSTN, and “0” from PSTN and ISDN to ISDN.1)The applicability of TID concept for existing G2/G3 terminals is not mandatory. In new G3 termina
6、ls the possibility to implementTID is to be encouraged.2 Fascicle II.5 - Rec. F.351TABLE 1/F.351SinkCountry BNetworkCSPDN(e.g. Canada)PSPDN(e.g. Canada)PSTN(e.g. France)ISDN(e.g. France)SourceTID 3029-1234567 = ABC 3028-1234567 = DEF 933-1234567890 = GHI 033-123456789 = IKLCSPDN + 3029-1234567(Note
7、1)+ 3028-1234567 + 933-1234567890 + 033-1234567890Country ADiallinginformation toPSPDN + 3029-1234567 + 3028-1234567 + 933-1234567890 + 033-1234567890reach subscriberBPSTN + 3029-1234567 + 3028-1234567 + 33-1234567890(Note 2)+ 33-1234567890(Note 2)ISDN + 3029-1234567 + 3028-1234567 + 33-1234567890(Note 2)+ 33-1234567890(Note 2)Note 1 The + signifies national escape digit(s) requirement.Note 2 On calls from PSTN to PSTN and ISDN, and from ISDN to PSTN and ISDN the escape codes “9” and “0” may not be acceptable to the national PSTN and ISDN.
