
Chapter 2 System telephony networking overview 61
BCM 4.0 Networking Configuration Guide
Using the diversion feature
Diversion is a DPNSS 1 feature for BCM that allows users to forward their calls to a third party on
the DPNSS 1 network. This feature is similar to Call Forward on BCM, but takes advantage of the
broader capabilities of DPNSS.
There are five variations of Diversion: Call Diversion Immediate, Call Diversion On Busy, Call
Diversion On No Reply, Bypass Call Diversion, and Follow-me Diversion. These variations are
described below:
• Diversion Immediate diverts all calls to an alternate telephone. This function is programmed
by the user at their telephone.
• Diversion On Busy diverts all calls to an alternate telephone when a telephone is busy. This
feature is programmed in the Element Manager.
• Diversion On No Reply diverts calls that go unanswered after a specified amount of time. This
feature is programmed in the Element Manager.
• Bypass Call Diversion overrides all call forward features active on a telephone over a DPNSS
line. An incoming call to the telephone will not be forwarded; instead, the telephone will
continue to ring as if call forward were not active. This feature is used to force a call to be
answered at that location. Bypass Call Diversion is a receive-only feature on BCM, and cannot
be used from a BCM telephone.
• Follow-me Diversion is also a receive-only feature. It allows the call forwarded destination to
remotely change the BCM call forwarding programming (Call Forward All Calls [CFAC]
feature) to a different telephone.
For example, user A forwards all calls to telephone B, a temporary office. Later, user A moves
on to location C. The user does not have to be at telephone A to forward calls to location C.
Using telephone B and Follow-me Diversion, the user can forward calls from A to location C.
Follow-me diversion can be cancelled from the forwarded location.
• Diversion on Busy and Diversion on No Reply cannot be cancelled from the forwarded
telephone. These are programmable only by an installer and not by the user.
• If multiple telephones are programmed to take a call, the first telephone to respond will act. All
other telephones responding are ignored. Therefore, if the first telephone to respond has
Diversion enabled, this feature will be invoked.
Restrictions by telephone type
• all variations supported on BCM digital and IP telephones
• ATA2/ASM8+—all variations supported on an ATA
• ISDN—all variations supported on ISDN telephones, except Diversion on Busy and CFWD
Busy
Note: BCM CFAC must be active and the destination set/PBX system must
support the feature.
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