Standard ECMA-157
Private Telecommunication Networks (PTN)
- Signalling Protocol at the S Reference Point - Identification
Supplementary Services (SSIG-ID)
2nd edition (June 1993)
This Ecma Standard specifies the signalling protocol for the
support of identification supplementary services at an interface
at the S reference point between a Terminal Equipment (TE) and
a Private Telecommunication Network (PTN). The Protocol specified
in this Standard is an extension of the layer 3 protocol for the
support of circuit mode basic services, as specified in ETS 300
192. The identification supplementary services concerned are Supplementary
Service Calling Line Identification Presentation (SS-CLIP), Supplementary
Service Connected Line Identification Presentation (SS-COLP) and
Supplementary Service Calling / Connected Line Identification
Restriction (SS-CLIR).
Service specifications are produced in three stages, according
to the method specified in ENV 41005. This Standard satisfies
the requirements identified by the stage 1 and stage 2 specifications
in Standard ECMA-148. This Standard
is applicable to user accesses of PTNXs and to TEs which are intended
for connection to PTNs.
The impact on the protocol of interactions between the supplementary
services specified in this Standard and other supplementary services
is outside the scope of this Standard.
The following file can be freely downloaded:
| File name |
Size (Bytes) |
Content |
| ECMA-157.pdf |
121 020 |
Acrobat (r) PDF file |
The previous replaced "historical" edition of this Ecma Standard is available here.
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