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Standard ECMA-252
Broadband Private Integrated Services Network (B-PISN) - Inter-Exchange Signalling Protocol - Transit Counter Additional Network Feature (B-QSIG-TC)

(December 1996)

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 Link to non-Ecma site. Ecma is not responsible for the contents of the site..

Service specifications are produced in three stages and according to the method specified in CCITT Rec. I.130Link to non-Ecma site. Ecma is not responsible for the contents of the site.. 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 Link to non-Ecma site. Ecma is not responsible for the contents of the site.) 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:

File name Size (Bytes) Content
ECMA-252.pdf 54 767    Acrobat (r) PDF file

This Ecma publication is also approved as ISO/IEC 15773.

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