1、CEPT T/CS*LY-OS*E 80 2326434 0004494 4 W TGS14-05 Page.1 E Recommendation T/CS 14-05 (Brussels, 1980) USE OF COMMON CHANNEL SIGNALLING Recommendation proposed by Working Group T/WG 11 “Switching and Signalling” (CS) Text of the Recommendation adopted by the “Telecommunications” Commission: “The Euro
2、pean Conference of Postal and Telecommunications Administrations, considering that - CCITT signalling systems No. 6 i is already being introduced for some inter-regional relations; - a significant number of member countries are planning the introduction of CCITT Signalling System No. 7 2, 31 - the u
3、se of CCITT Signalling System No. 7 will become the preferred choice for international common channel - CCITT Signalling System No. 7 is in an advanced stage of specification by the CCITT with a significant - it is desirable to maximise the harmonisation of common channel signalling within Europe, r
4、ecommends to the members of the CEPT that - for national and regional common channel signalling, CCITT Signalling System No. 7 2, 31 should be used; - for inter-regional digital operation of common channel signalling the objective is to use CCITT Signalling System - the basic method of error correct
5、ion in CCITT Signalling System No. 7 should be used in the national digital - for regional and inter-regional application of CCITT Signalling System No. 7, the error correction method should Note: For analogue operation of common channel signalling, it is recognised that CCITT Signalling System No.
6、6 i is already being used (or is planned for use) for some inter-regional relations and will continue to be used for a considerable time. in their national networks; signalling within Europe; contribution being made by CEPT countries and that it currently includes two error correction methods; O No.
7、 7; terrestrial networks of CEPT countries; be chosen according to the rules established by the CCIT.” References i CCITT Recommendations Q.251 to Q.295. Specijications of Signalling System No. 6. 2 CCITT Recommendations 4.701 to Q.725. Specifications of Signalling System No. 7. 3 CCITT Recommendation X.61 (4.741). SpeciJicatons of Signalling System No. 7, Data user part. O Edition of May 15, 1986
