Private Integrated Services Network (PISN)
- Specification, Functional Model and Information Flows - Call
Diversion Supplementary Services (CFSD)
3rd edition (December 2001)
This Standard specifies the supplementary services Call Forwarding
Unconditional (CFU), Call Forwarding Busy (CFB), Call Forwarding
No Reply (CFNR) and Call Deflection (CD), which are applicable
to various basic services supported by Private Integrated Services
Networks (PISN). Basic services are specified in ECMA-142.
SS-CFU, SS-CFB and SS-CFNR are supplementary services which apply
during call establishment providing a diversion of an incoming
call to an other destination. SS-CD is a supplementary service
which allows a served user to respond to an incoming call by requesting
redirection of that call to another number specified in the response.
Supplementary service specifications are produced in three stages,
according to the method described in ETS 300 387. This Standard
contains the stage 1 and stage 2 specifications of the Call Diversion
supplementary services. The stage 1 specifications (clauses 6,
7, 8 and 9) specify the supplementary services as seen by users
of PISNs. The stage 2 specification (clause 10) identifies the
functional entities involved in the supplementary services and
the information flows between them.
The following file can be freely downloaded:
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 13872.
The previous replaced "historical" editions of this Ecma Standard are available here.