CAN/CSA-ISO/IEC-11572-94 (R1999)

Scope

This International Standard defines the signalling procedures and protocol for the purpose of circuit-switched Call Control at the Q-reference point between Private Integrated Network Exchanges (PINXs) connected together within a Private Integrated Services Network (PISN). This standard is part of PSS1, being defined by ISO for PISNs.

This International Standard is based upon that described in CCITT recommendations Q.930 and Q.931 (Blue Book, 1988), inclu ding the provisions for symmetrical operation described in annex D of that recommendation.

NOTE - The signalling procedures and protocol defined in this International Standard satisfies the requirements identified in ISO/IEC 11574.