The CCITT, considering (a) that public networks providing circuit-switched data transmission services are being established invarious countries; (b) that common channel signalling offers advantages when used for interexchange signalling in digitalcircuit-switched telecommunication networks; (c) that a need has been established for a standardized common channel signalling system, known as CCITT Signalling System No. 7, for use in international and national applications in single service and multiservices digital networks; (d) that Signalling System No. 7 has been defined with a functional structure clearly separating.
ITU-T X.60-1988 Referenced Document
ISO/IEC 13252:1999 Information technology - Enhanced communications transport service definition*， 1999-07-01 Update
ISO/IEC 14476-1:2002 Information technology - Enhanced communications transport protocol: Specification of simplex multicast transport*， 2002-06-01 Update
ISO/IEC 14476-2:2003 Information technology - Enhanced communications transport protocol: Specification of QoS management for simplex multicast transport*， 2003-12-15 Update
ITU-T X.606-2001 Information technology - Enhanced communications transport protocol: Specification of simplex multicast transport Study Group 7*， 2024-04-19 Update
ITU-T X.606.1-2003 Information technology Enhanced Communications Transport Protocol: Specification of QoS management for simplex multicast transport Study Group 17*， 2003-02-01 Update
ITU-T X.60-1988 history
1988ITU-T X.60-1988 COMMON CHANNEL SIGNALLING FOR CIRCUIT SWITCHED DATA APPLICATIONS