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1.20 Integrated Services Digital Network (ISDN) Service Features
Feature Guide 191
1.20.1.5 Call Forwarding (CF)—by ISDN (P-P)
Description
An extension user can forward the incoming ISDN call to another outside party using the ISDN
service of the telephone company, instead of the PBX feature, when the call is received through
an ISDN line.
The network directly forwards the call to the destination which the extension user has set on
the PBX as the forward destination of trunk calls; the network is instructed by the PBX. This
feature is available only when the call is received through an ISDN port which supports this
feature.
Call Forwarding—Unconditional (CFU), Call Forwarding—Busy (CFB), and Call Forwarding—
No Reply (CFNR) are applied to this feature.
This feature complies with the following European Telecommunication Standard (ETS)
specifications: ETS 300 207 Diversion supplementary service.
[Example]
Conditions
• The availability of this feature is dependent on the contract with the telephone company.
• This feature can be enabled or disabled on each ISDN port of the PBX.
• This feature is available when the same trunk group is used for the incoming call and the
forwarded call.
Feature Guide References
1.3.1.2 Call Forwarding (FWD)
Outside PartyOutside Caller
Extn. 1011
Dials "01-45-6789".
CF Request
to 01-23-4567
(DDI No.: 01-45-6789
Forward Destination
of Trunk Calls: 01-23-4567)
(DDI No.: 01-45-6789
Forward Destination
of Trunk Calls: 01-23-4567)
(01-23-4567)
ISDN
<FWD> <Call Forwarding (CF) by ISDN (P-P)>
PBX
Outside Party
Outside Caller
Extn. 1011
Dials "01-45-6789".
(01-23-4567)
ISDN
PBX