Private Integrated Services Network (PISN)
- Inter-Exchange Signalling Protocol - Private User Mobility (PUM)
- Call Handling Additional Network Features (QSIG-PUMCH)
3rd edition (December 2001)
This Standard specifies the signalling protocol for the support
of the Private User Mobility call handling additional network
features (ANF-PUMI and ANF-PUMO) at the Q reference point between
Private Integrated services Network eXchanges (PINX) connected
together within a Private Integrated Services Network (PISN).
ANF-PUMI is a feature that directs incoming calls to a PUM user
within the PISN regardless of the PUM user's geographical location
within the PISN, provided that the PUM user's location is known.
ANF-PUMO permits the PISN to process call requests from a PUM
user at the home location, if required.
The Q reference point is defined in ECMA-133.
Service specifications are produced in three stages and according
to the method specified in ITU-T Rec. I.130. 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
The signalling protocol for ANF-PUMI and ANF-PUMO operates on
top of the signalling protocol for basic circuit switched call
control, as specified in ECMA-143,
and uses certain aspects of the generic procedures for the control
of supplementary services specified in ECMA-165.
This Standard also specifies additional signalling protocol requirements
for the support of interactions at the Q reference point between
ANF-PUMI / ANF-PUMO and other supplementary services and ANFs.
This Standard is applicable to PINXs which can interconnect to
form a PISN.
The protocol defined in this Standard forms part of the PSS1
protocol (informally known as QSIG).
The following file can be freely downloaded:
||1 134 487
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 17878.
The previous replaced "historical" editions of this Ecma Standard are available here.