Avaya IP Office - Manual (Page 115)

Voicemail Pro Installation Page 115
EN-S Issue 01b (20 June 2011) IP Office
Centralized Voicemail Pro: Fallback IP Office Control
7.3 Backup Voicemail Server Operation
For IP Office Release 6.0, the central IP Office hosting the Voicemail Pro server can be configured with the IP address of a
backup voicemail server. If the central voicemail server becomes unavailable to the network, the backup server will be
used to provide voicemail services. This option requires the voicemail servers to be running Voicemail Pro 6.0 or higher.
Centralized voicemail with a backup server during normal operation.
During Normal Operation:
· Voicemail services and message
storage for the IP Offices is provided
by the primary voicemail server.
· Call flows and other settings configured
on the backup voicemail server are
synchronized with those of the central
voicemail server.
· Messages are synchronized but the
central voicemail server remains the
message store accessed for message
collection.
· The synchronization is done using IIS
SMTP email between the servers.
Centralized voicemail with a backup server during backup operation.
During Backup Operation:
If the central voicemail server become
unavailable to the network:
· The backup voicemail server provides
voicemail services for the IP Offices.
· New messages are left on the backup
server.
After Backup Operation
When the central server is restored to the
network:
· It does not automatically resume
control. However messages and
changes that occurred while it was
unavailable are synchronized from the
backup server.
· If the backup server fails, the central
sever resumes control as the active
server.
· Call flows defined on the central server are synchronized with the backup server.
· Call flows defined on the central server cannot be modified on the backup server.
· Call flows cannot be defined on the backup server.
· Call flows defined on a distributed server are not synchronized to the central or backup servers.