Swapping/Adding/Deleting Avpps - Avaya 3641 Installation, Configuration And Administration

Part A: Avaya Voice Priority Processor
4.

Swapping/Adding/Deleting AVPPs

Whenever an AVPP is removed from the system, Wireless IP Telephones that are using the
AVPP will be affected. If the removal of the AVPP is intentional, the administrator should
lock and idle the system prior to removing an AVPP.
Adding an AVPP
A new AVPP is detected within two seconds of being added to the system
(booted/configured/connected). When detected, any Wireless IP Telephone not active in a
call will immediately be forced to reboot and check in again. Any Wireless IP Telephone in
a call will immediately switch to the AVPP that should provide its "timing" function. This
switch should not be noticeable to the user since it is similar to a normal handoff between
access points. When the Wireless IP Telephone ends the call, it will be forced to reboot
and check in again.
Removing an AVPP
When an AVPP is removed from the system it is detected within two seconds. Wireless IP
Telephones not in calls are immediately forced to reboot and check in again. For Wireless
IP Telephones active in calls, two possible scenarios can occur. If the AVPP that was
removed was providing the "gateway" function for the Wireless IP Telephone, then the call
is lost and the Wireless IP Telephone is forced to check-in again. If the AVPP that was
removed was providing the "timing" function for the call, the call will switch to the AVPP
that should now provide the "timing" function. Note that during the two seconds while the
loss of the AVPP is being detected, the audio for the call will be lost.
Changing the Master AVPP
In the event the master AVPP loses communication with the network, the Wireless IP
Telephone system will fail. All AVPPs will lock, all calls will be lost, and no calls can be
placed. Therefore, if the master AVPP needs to be replaced, be sure the system can be
brought down with minimal call interruption. Be sure to reset all AVPPs after the master
has been replaced. If the IP address of the master is changed, it must be changed in all
AVPPs.
28 Avaya Voice Priority Processor, Avaya 3641/3645 Wireless IP Telephone, Handset Administration Tool