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Standard ECMA-224
Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Transit Counter Additional Network Feature (ANF-TCSD)

2nd edition (June 1997)

ANF-TC is an additional network feature which limits the number of network exchanges that a call request may transit during call establishment, e.g. to protect the network against indefinite looping. There is no user involved in the provision or operation of ANF-TC.

Additional network feature specifications are produced in three stages, according to the method described in ETS 300 387. This Standard contains the stage 1 and stage 2 specifications of ANF-TC. The stage 1 specification (clause 6) specifies the general feature principles and capabilities. The stage 2 specification (clause 7) identifies the functional entities involved in the feature and the information flows between them.

The following file can be freely downloaded:

File name Size (Bytes) Content
ECMA-224.pdf 70 085    Acrobat (r) PDF file

This Ecma publication is also approved as ISO/IEC 15055.

The previous replaced "historical" edition of this Ecma Standard is available here.


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