Private Integrated Services Network (PISN)
- Generic Functional Protocol for the Support of Supplementary
Services - Inter-Exchange Signalling Procedures and Protocol (QSIG-GF)
4th edition (June 2001)
This Standard defines the signalling protocol for the control
of Supplementary Services and Additional Network Features (ANFs)
at the Q reference point. The protocol is part of Private Signalling
System no. 1 (PSS1), known informally as QSIG. The Q reference
point exists between Private Integrated services Network eXchanges
(PINXs) connected together within a Private Integrated Services
Network (PISN) and is defined in ECMA-133.
Detailed procedures applicable to individual supplementary services
and ANFs are beyond the scope of this Standard and will be specified
by other standards for those services which are standardised and
by individual manufacturers for proprietary services using the
capabilities defined in this Standard.
Standard ECMA-143 defines the Layer
3 protocol for circuit-switched call control at the Q reference
point. This Standard defines additional protocol procedures, to
be used in conjunction with those defined in ECMA-143
for the control of supplementary services and ANFs.
Typical examples of the application of these generic functional
procedures to some supplementary services are provided in annex
C, for explanatory and illustrative purposes only.
Specific supplementary services and Additional Network Features
may require additional information transfer mechanisms which are
service or feature specific and are beyond the scope of this Standard.
The protocol defined in this Standard forms part of the PSS1
protocol (informally known as QSIG).
The following file can be freely downloaded:
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||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 11582.
The previous replaced "historical" editions of this Ecma Standard are available here.