Nortel Meridian Meridian 1 Feature Description And Administration page 1684

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ISDN BRI ETSI Call Forwarding Unconditional
Feature description
Operating parameters
553-2901-301 Standard 9.00 January 2002
ISDN BRI features
The European Telecommunication Standards Institute (ETSI) Call
Forwarding Unconditional (CFU) supplementary service allows an incoming
call to an ISDN BRI terminal to be forwarded to a predetermined destination,
within or outside the Meridian 1 system. The call is forwarded regardless of
whether the user is busy or idle.
Voice and data basic services can be individually forwarded to the same DN.
Also, calls can be forwarded to an ISDN BRI terminal or a non-ISDN BRI
terminal. When the CFU feature is activated, outgoing calls can still be made
from the ISDN BRI terminal.
The Call Forwarding capabilities may be provided to all users on the access
(i.e., all the DNs defined under a DSL), or an individual user (i.e., a DN).
The following functionalities are currently supported:
• When a call is forwarded, if the caller is using an ISDN BRI set they will
be notified by the Meridian 1 that the call has been forwarded. In
addition, the caller is provided with the forwarded-to number.
• When a call is forwarded from an ISDN BRI terminal that has CFU
activated, the terminating terminal will be notified by the Meridian 1 that
the ISDN BRI terminal forwarded the call.
The ETSI CFU supplementary service is based on the Meridian 1 Call
Forwarding All Calls feature. Therefore, Meridian 1 Call Forwarding All
Calls feature limitations also apply to this feature.
ETSI CFU basic service is limited to speech, 3.1 kHz audio, unrestricted
digital information and restricted digital information.
Interrogation of all served users in TSP 0 will be supported. However, if the
number of DNs is too large to fit into one message, interrogation of all served
users in TSP 0 will not be supported.