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Overview of Standards for services and signalling in narrowband PISNs

Ecma has developed a series of Standards for services and signalling protocols in narrowband Private Integrated Services Network (PISNs). These Standards define two signalling systems: QSIG and SSIG. QSIG (signalling system for use at the Q reference point in narrowband PISNs) operates at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected together within a 64 kbit/s-based PISN. SSIG (signalling system for use at the S reference point in narrowband PISNs) operates at the S reference point between a terminal and a PINX. The signalling protocol Standards are complemented by Standards defining, in abstract terms, services supported by these signalling systems.

The Standards concerned fall into three categories:


With the exception of SSIG Standards, the Standards listed above have been contributed to ISO/IEC JTC 1 Link to non-Ecma site. Ecma is not responsible for the contents of the site. as proposed International Standards. For many of these, corresponding International Standards have now been published by ISO/IEC, based on the Ecma work, and in such cases the current editions of the Ecma Standards are in complete alignment.

Ecma work on these Standards has taken place under a Cooperation Agreement with ETSI Link to non-Ecma site. Ecma is not responsible for the contents of the site. and has resulted in the publication of corresponding ETSs or ENs, which endorse the ISO/IEC International Standards where these are available.
 

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