Preemption - Avaya 1140E Software User's Manual

Multi-Level Precedence and Preemption

Preemption

Only two simultaneous calls can be presented. If your IP Deskphone reaches the maximum call limit
and you receive a higher precedence call, then one of the existing calls is preempted in order to
present the higherprecedence incoming call. An incoming call with a precedence level less than or
equal to the already-received call precedence levels is not presented.
Note:
Emergency 911 calls can be preempted when there are no available call appearances and there
is an incoming above-Routine precedence call.
IM sessions cannot be preempted because they do not count as a call appearance.
Order of call preemption
The following is the order of call preemption:
1. the lowest precedence call
2. If there are multiple calls on the same precedence level, then the following order is used:
a. any outgoing call that is unanswered
b. the oldest incoming call that is unanswered
c. the oldest held call
Preemption scenarios and behavior
The following table describes the IP Deskphone behaviors that occur when receiving a call of higher
precedence than the presented current calls and no call appearances are available.
Table 22: When a preemption call is received
Call state
While a call is on hold
An incoming call is ringing
An outgoing call is ringing
August 2017
Preemption behavior
1. Preemption tone is played through the Handsfree speaker for
three seconds.
2. The preempting call presents with the appropriate ringing.
3. The new preemption precedence call screen is displayed.
1. The preempting call presents with the appropriate ringing.
2. The new preemption precedence call screen is displayed.
1. The preemption tone plays continuously in the Handsfree
speaker for few seconds.
2. The outgoing call is removed.
3. The preemption acknowledgment screen is displayed. See an
example in
page 271.
Avaya 1140E IP Deskphone with SIP Software User Guide
Comments on this document? infodev@avaya.com
Preemption acknowledgement screen on
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