1、 CEPT T/CS*O3-02*E 82 W 2326434 0004432 - 4 _ I TCC Page E 1 Recommendation T/CS 01-02 (Vienna, 1982) FORMAT OF SIGNALLING SYSTEM SPECIFICATIONS Recommendation proposed by Working Group T/WG 11 “Switching and Signalling” (CS) Text of the Recommendation adopted by the “Telecommunications” Commission
2、 “The European Conference of Postal and Telecommunications Administrations, considering - that CCITT signalling systems Nos. 6 and 7 i, 21 and also the CEPT studied and recommended signalling - that in the case of signalling systems structured into functional levels 4, each level is described in a
3、separate - that signals and procedures for call control, including possible additional features (e.g. for user facilities or System R2 3 are specified in the form of several recommendations; recommendation or in a separate set of recommendations; supplementary services) are then specified in separat
4、e recommendations, which distinctly cover the areas: (a) signal or signalling message names and meanings, (b) signal or signalling message coding and transfer, (c) signalling procedures and that, where required, line and interregister signalling specifications are also separated; software developmen
5、t involved therein; complementary recommendations in the areas a, b and c, described above, - that this format of signalling system specification is suitable for stored program controlled switching and the - - that this format makes it easier for CEPT to recommend new signalling procedures for Europ
6、ean needs by issuing s recommends that the members of the CEPT draw up signalling system specifications employed in the European network in the uniform format mentioned in the considerations above and already used for the CCITT signalling systems Nos. 6 and 7 and the CEPT studied and recommended sig
7、nalling System R2 i, 2, 31.” . ,A , n. References i CCITT signalling System No. 6. 21 CCITT signhing System NO. 7. 3 Recommendation TICS 14-01. Use of signalling System R2 in European telephone network. 4 CCITT Recommendation X.200. Reference Model of Open Systems Interconnection for CCITT Applications. - Edition of May IS, 1986
