Controller Determination And Survivability Activity; Determine Controllers To Monitor - Avaya 9608 Administrator's Manual

System Failover and Survivability
An entry can be deleted by navigating to the entry and pressing the Delete softkey only if
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the entry was created from this screen. You cannot delete an entry not created from this
screen.
If the New softkey is pressed, a new screen is shown which allows the user to enter the
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parameter's values for server, transport type, and port. The server and port fields are
initially blank. The transport type is initially shown as TLS. Once any field is edited the
Save softkey appears. When the Save softkey is pressed a new entry is inserted into the
list of configured controllers at the UI priority. Multiple UI entries are prioritized in the order
in which they are entered.
If an entry is selected (by pressing the Select softkey when the entry is highlighted) a new
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screen is shown which displays the parameter's current values for server, transport type,
and port. In this screen all of the values can be edited. Once any of the values are edited
the Save softkey appears. If the Save softkey is pressed, the information is saved as
follows.
- If the selected value originated from user input from the SIP proxy settings screen then
the changes will replace that original SIP controller entry.
- If the selected value originated from any other source, the entire list of configured
controllers is copied and saved as if they all originated from the SIP proxy settings
screen.
If the administrator clears the controllers in the setting file, the only way to clear the values
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that are displayed on the SIP proxy screen that are downloaded from PPM is to clear the
values on the phone.
If the administrator is at the Login screen and no controller has been set, a controller can
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be set at the Craft (Local Administrative procedures) menu, as described in the Avaya
one-X™ Deskphone SIP Installation and Maintenance Guide for 9608, 9611G, 9621G,
and 9641G Deskphones (Document Number 16-603604). The user can log in successfully
with a controller at this point.

Controller Determination and Survivability Activity

The deskphone performs controller determination and verification after a successful user login.
The deskphone then periodically performs failover checks. The steps are:

1. Determine controllers to monitor

The list of controllers to monitor is built from the Configured Controller(s) list using the
SIPREGPOLICY parameter setting as a guide. The list of SIP Proxies/Registrars can be
obtained from the network DHCP servers, retrieved from the 46xxsettings file, retrieved from a
PPM (Personal Profile Manager), or configured via the phone's UI (User Interface). Similarly,
146 Deskphone SIP 9608, 9611G, 9621G, 9641G Administrator Guide Release 6.0.1