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NEAX2400 IPX ISDN Features and Specifications
Page 156
NDA-24311, Issue 1
C-158 Call Forwarding Supplementary Service (SS-CF) with Rerouting
C-158 Call Forwarding Supplementary Service
(SS-CF) with Rerouting
General Description
This feature provides Call Forwarding service activated following ETS 300 257 protocol (SS-CF). By using this
feature, all incoming calls can be forwarded automatically after the destination is programmed against the called
party. Also, rerouting function is activated with SS-CF service.
The functions of this feature are divided into the following:
1. Call Forwarding - Supplementary Service
Example) The service activation procedures below are explained under this condition.
Station A : Calling Station
Station B : Called Station (Forwarding Station)
Station C : Forwarded-to Station
a.) Supplementary Service - Call Forwarding Unconditional (SS-CFU)
All incoming calls routed to the station are forwarded to the designated destination automatically.
(1) Station A originates a call to Station B.
(2) The call is forwarded to Station C.
b.) Supplementary Service - Call Forwarding Busy (SS-CFB)
When the called station is busy, an incoming call terminated at the station is forwarded to the
designated destination automatically.
When Station B is busy, the call is forwarded to Station C.
c.) Supplementary Service - Call Forwarding No Reply (SS-CFNR)
When the called station is not answered for a predetermined time, an incoming call terminated at
the station is forwarded to the designated destination automatically.
(1) When Station A originates a call to Station B (Station B is ringing).
(2) Since Station B has not answered for a predetermined time, a call is forwarded to Station C.