Ecma International Home
  Standards
contact us
Ecma Site Map
What is Ecma Activities News Standards



 

Standard ECMA-221
Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Interception Additional Network Feature (QSIG-CINT)

3rd edition (December 2001)

This Standard specifies the signalling protocol for the support of the additional network feature Call Interception (ANF-CINT) at the Q reference point between Private Integrated services Network eXchanges (PINX) connected together within a Private Integrated Services Network (PISN).

ANF-CINT is an additional network feature which enables calls that cannot be completed due to certain conditions to be redirected to a predetermined intercepted-to user.

The Q reference point is defined in ECMA-133.

Service specifications are produced in three stages and according to the method specified in ETS 300 387. 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 in ECMA-220.

The signalling protocol for ANF-CINT 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-CINT and other supplementary services and ANFs.

NOTE:
Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1 specifications.

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:

File name Size (Bytes) Content
ECMA-221.pdf 944 669    Acrobat (r) PDF file

This Ecma publication is also approved as ISO/IEC 15054.

The previous replaced "historical" editions of this Ecma Standard are available here.

 

Back Back

 

 

 

 

 
 
only search Ecma International

Level A conformance icon, 
          W3C-WAI Web Content Accessibility Guidelines 1.0