692 Matrix ETERNITY NE System Manual
Call Forward - When Not Registered
SIP Phones connected as extensions may fail to register with SARVAM UCS when the network link is down or
when there is power failure. Using the Call Forward-When Not Registered feature, the extension users can have
their calls forwarded even when their extension phone is not registered with SARVAM UCS.
The destination for ‘Call Forward-When Not Registered’ can be an internal number, an external number or the
Voice Mail.
It is also possible to select the types of calls—internal calls only, or trunk calls, or both—to be forwarded to external
numbers.
Call Forward-When Not Registered can be set/canceled by,
• the System Administrator mode.
• SIP Phone users from their phones.
Call Forward- When Not Registered can also be set for a time zone—Day Time and Break/Night Time, by setting
Call Forward-When Not Registered - Scheduled.
Call Forward - When Not Registered-Scheduled can be set for Day Time and Break/Night Time on the same SIP
Phone. It can be canceled individually for a desired time zone, or both time zones at once. A different destination
number can be set for forwarding calls for Day Time, Break Time and Night Time. For example, the destination
number for Night Time can be a mobile number and the destination number for Day Time can be another extension
number.
Feature Interaction:
• If ‘Call Forward-Unconditional’ and ‘Call Forward-When Not Registered’, have been set on the same SIP
Phone. ‘Call Forward-Unconditional’ will have priority over ‘Call Forward-When Not Registered’.
• If ‘Call Forward-Scheduled-Unconditional’ and ‘Call Forward-When Not Registered-Scheduled’, have been
set on the same SIP Phone. ‘Call Forward - Scheduled - Unconditional’ will have priority over ‘Call
Forward-When Not Registered-Scheduled’.
How to configure
The Call Forward-When Not Registered feature does not require any specific programming except,
• make sure the Call Forward feature is enabled in the Class of Service (CoS) of the SIP extensions. For
instructions, see “Class of Service” under the topic “SIP Extensions”.
• if required, select the types of calls to be forwarded to the external number. By default, only trunk calls are
forwarded to external numbers. If you want to select a different type of call, configure the parameter If Call
is forwarded on external number on the SIP Extension. For instructions, see “Call Forward” under “SIP
Extensions”.
If you want to allow Call Forward-When Not Registered to be set only by the System Administrator (SA) for the
extension users, you must disable the ‘Call Forward’ feature in the CoS assigned to the SIP extensions.
If you disable ‘Call Forward’ in the CoS of a SIP Phone, the user will not be able to set any other type of
Call Forward.
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