User's Manual

As well, when this feature is enabled:
• the Answer soft key is not displayed for an incoming call
• the user cannot answer a call by pressing the Handsfree key or line key, except for calls
from the Emergency 911 operator
• the user cannot go handsfree by pressing the Handsfree key
. To answer any call except from Emergency 911, the user must go off-hook.
MLPP tones
Unique tones are played when MLPP is enabled.
Precedence Ringback Tone:
A precedence ringback tone is played when the calling party makes a precedence call. This
tone is only played after the call has been confirmed by the server.
Precedence alerting tone:
A precedence alerting tone is played to alert the called party that a precedence call is arriving.
This tone is delivered through the speaker. The precedence alerting tone is played if there is
no active call or a if call is on hold.
Precedence Call Waiting tone:
When a call with a precedence level higher than Routine is received, and the user is busy with
another call, the precedence Call Waiting tone is played instead of the normal Call Waiting
tone. This tone is delivered through the Handsfree speaker.
Preemption tone:
When a call is preempted, the preemption tone is played. This tone is delivered through the
Handsfree speaker.
Feature interactions
The following table describes IP Deskphone feature interaction with MLPP.
Feature
Interaction with MLPP
Call Park Not available when MLPP is enabled.
Call Forward Call Forward is the responsibility of the Call Server. Call
forwarding is disabled locally on the IP Deskphone if
DoD_Enable is turned on in the device configuration
file.
Call Transfer — Direct Available, but precedence of the call is maintained.
Call Transfer — Consultative Available. A consultation call can have its own
precedence level. The transferred call uses the greater
precedence level of the initial call and the consultative
call.
Multi-Level Precedence and Preemption
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 211