User Guide

Call state Preemption behavior
An outgoing call is ringing
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 Preemption
acknowledgement screen on page 293.
4. When the preemption is acknowledged, or after
three seconds elapse:
a. Preemption tone stops.
b. The new preemption precedence call screen is
displayed.
c. The preempting call presents with the
appropriate ringing.
Figure 86: Preemption acknowledgement screen
External preemption
The IP Deskphone supports preemption from external sources.
The following table describes the IP Deskphone behaviors that occur when receiving a call
from an external source with higher precedence than the presented current calls and no call
appearances are available.
Call state
Preemption behavior
While on an active call/music on hold
1. Preemption tone is played through the
handsfree speaker.
2. The active call is removed.
Preemption
Avaya 1120E IP Deskphone with SIP Software User Guide November 2013 293