Avaya 1040E User Manual

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Multi-Level Precedence and Preemption
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Call Origination Busy
When Call Origination Busy is enabled, incoming calls are prevented from 
disturbing you when you are in the process of making an outbound call. 
When your IP Deskphone is on-hook or off-hook and you enter the first 
digit or character, then any call that comes in during the entry sequence is 
not presented to you. 
Incoming calls are shown when you cancel the outbound call by pressing 
Goodbye, or when you place the receiver on-hook and the IP Deskphone 
goes back to the idle state.
If you place an outbound call, and that outbound call rings or receives a 
busy signal, any incoming call that was not presented is then presented. 
Note: 
The outgoing call cannot be preempted by any call until the 
outgoing call rings or receives a busy signal.
The following sections describe Call Origination Busy behavior in various 
scenarios.
An outgoing call is 
ringing
1. The preemption tone plays continuously 
in the Handsfree speaker for few 
seconds. 
2. The preemption acknowledgment screen 
is displayed. See 
3. When the preemption is acknowledged 
or after three seconds elapse, the 
preemption tone stops.
Table 21: When a preemption call is received from an 
external source
Call state
Preemption behavior