Provisioning Survivability For Sip Deskphones; Configuring Survivability - Avaya 9608 Administration

System failover and survivability
controller. The subscription can be moved regardless of whether a user is on a call or
not.
- Call Preservation - During an active call, the deskphone has detected a lost connection
to the primary controller and exhibits media preservation behavior.
The Call Preservation Message Box or the Acquiring Services screen are not displayed
●
during the Moving Subscription Interval (MSI).
MSI transition and failback to the primary Session Manager occurs according to the failback
behavior described in

Provisioning survivability for SIP Deskphones

The following steps provide a brief overview of the provisioning process:
1. Set the applicable failover configuration parameters (described in
in the 46xxsettings file.
2. Provision the gateway as per the Application Notes, available on the Avaya support Web
site.
3. Load the latest SIP Release software and associated files on the file server.
4. Reboot all registered phones from Session Manager.
5. Power up other phones.

Configuring survivability

By administering survivability configuration parameters using the 46xxsettings file (or using the
default values if applicable), the SIP Deskphones can quickly switch to an active controlling
server and experience minimal disruption. The failover/failback parameters, described in detail
in , are:
CONTROLLER_SEARCH_INTERVAL - The time the deskphone waits to complete the
●
maintenance check for Monitored Controllers.
DISCOVER_AVAYA_ENVIRONMENT - Determines whether the deskphone operates in a
●
mode to comply with the Avaya environment mode (provision of SIP/AST features and use
of PPM for download and backup/restore).
ENABLE_REMOVE_PSTN_ACCESS_PREFIX - Enables the removal of the PSTN
●
access prefix from collected dial strings when the deskphone is communicating with a
non-AST controller.
152 Administering Avaya 9601/9608/9608G/9611G/9621G/9641G IP Deskphones SIP
3. Select the active controller
Comments? infodev@avaya.com
on page 155.
Configuring survivability)