Broadband Private Integrated Services
Network (B-PISN) - Inter-Exchange Signalling Protocol - Transit
Counter Additional Network Feature (B-QSIG-TC)
This Standard specifies the signalling protocol for the support of the Transit Counter additional network feature (ANF-TC) at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected together within a Broadband Private Integrated Services Network (B-PISN).
ANF-TC is a feature that limits the number of Transit PINXs that a call/connection setup request may be routed through e.g., to protect the network against indefinite looping.
The Q reference point is defined in ISO/IEC 11579-1 .
Service specifications are produced in three stages and according to the method specified in CCITT Rec. I.130. This Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ECMA-224.
The signalling protocol for ANF-TC operates in association with the signalling protocols for basic call/connection control (as specified in ISO/IEC 13247 ) and call independent (connection oriented) signalling connections (as specified in ECMA-254).
This Standard is applicable to PINXs that can interconnect to form a PISN.
The protocol defined in this Standard forms part of the B-QSIG protocol.
The following file can be freely downloaded:
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 15773.