Avaya Voice Priority Processor Models; The Timing Function; Multiple Avaya Voice Priority Processors/Master Avaya Voice Priority Processor - Avaya 3641 Installation, Configuration And Administration

1.2

Avaya Voice Priority Processor Models

The AVPP is available in three models. Which model is selected for your facility depends
on current and expected capacity. All AVPPs within a subnet must be the same model
type.
•
AVPP – Serves 80 calls simultaneously.
•
AVPP 20 – Serves 20 powered-on handsets.
•
AVPP 10 – Serves 10 powered-on handsets.
See the following capacity tables for multiple AVPP system capacities.
All AVPP models are installed, configured and administered according to the instructions
in this document. The model information is available on the Software Version screen. See
section 7.3 Software Version.
1.3

The Timing Function

Avaya Voice Priority Processors provide the connection or "gateway" to the IP PBX for the
Wireless IP Telephones and the "timing" function for active calls. This "gateway" function
is distributed across the AVPPs.
The number of active AVPPs is determined dynamically. Whenever AVPPs are added to or
removed from the system, the distribution of the "timing" function for active calls is
affected.
1.4 Multiple Avaya Voice Priority Processors/Master Avaya Voice
Priority Processor
Multiple AVPP environments are those which have more than one Avaya Voice Priority
Processor. Up to four AVPP 10 models or up to two AVPP 20 models may be installed in
any one subnet. Up to 16 models of AVPP Servers may be installed in any one subnet. All
AVPPs must be in the same subnet.
In a system comprised of multiple AVPPs, a master AVPP must be identified. The master
AVPP must have a static IP address. The Wireless IP Telephones and the other AVPPs
locate the master by using a static IP address, DHCP, or DNS.
The master AVPP performs important coordinating functions. The loss of a non-master
AVPP does not significantly affect the operation of the remaining AVPPs but results in the
reboot of all handsets. However, the loss of the master AVPP results in a loss of all
communication between all of the AVPPs. This also means that the loss of the master
AVPP results in the loss of all active calls and Wireless IP Telephones cannot check-in
until communication with the master is reestablished.
AVPP Overview
Issue 1, January 2007 9