Behavior before R11:
when the mobile set of a Remote Extension user receives a call from OXE and the mobile is in one of the following states (swithed off, busy, Out of Coverage area, Out of Service, the REX user may reject the call), OXE will receive a DISCONNECT message from the REX is unavailable due to the above mentioned reasons. When an Associate Set is managed in OXE for the Remote Extension, on receiving a DISCONNECT message, the behavior in OXE depends on the value of a system parameter
System -> Descend Hierarchy -> Other System Parameters -> Descend Hierarchy -> External Signaling Parameter -> Review/Modify -> “Listen to guide on DISCONNECT”
According to the existing implementation of Remote Extension, when the parameter “Listen to guide on DISCONNECT” is set to:
- TRUE the incoming call to Remote Extension overflows to its Associate Set only after no answer timer expires.
- FALSE the incoming call to Remote Extension overflows to its Associate Set immediately
Enhancement from R11:
When REX user is configured as Non-Tandem set, then the call will overflow to the associate set of the REX immediately irrespective of the value of parameter “Listen to guide on Disconnect”.
Whenever REX user is configured as Tandem’s secondary set, the overflow will depend upon the state when the DISCONNECT message is received. If OXE receives a DISCONNECT message before ALERT, the call will not overflow to the associate Set immediately but will overflow only after the call no answer timer. If OXE receives the DISCONNECT message after ALERT, the call will overflow to the associate set of the REX immediately
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