Avaya B5800 User Manual Page 198

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Name Default Description
target any matching
centralized extension DID
and then any centralized
extension number before
checking any alternative
routes configured.
Survivability settings
The settings used by each survivable extension are set through System Manager, as described
in Step 8e in Adding stations to Session Manager on page 185 and through the 46xxsettings.txt
file loaded by each survivable extension when it is started. The 46xxsettings.txt file includes
survivability settings. Since the settings may be slightly different for each branch site, the
46xxsettings.txt file used by each branch site may be different, potentially making it difficult to
use a single file server for all survivable extensions. However this can be solved by using a
single file with GROUP options. See
Using the group parameters on page 201 for more
information.
When there is a single Avaya Aura
®
Session Manager, the 9600 Series SIP phones perform
alternate registration with either the Avaya Aura
®
Session Manager when available or the
survivable B5800 Branch Gateway. This is done by setting the
SIMULTANEOUS_REGISTRATIONS parameter to 1.
When operating in a network deployment that includes Avaya Aura
®
Session Manager
redundancy, the phones can do simultaneous registration with both Avaya Aura
®
Session
Managers. This is done by setting the SIPREGPROXYPOLICY parameter to simultaneous
and the SIMULTANEOUS_REGISTRATIONS parameter to 2 (the number of Avaya Aura
®
Session Managers). Simultaneous registration is supported between Avaya Aura
®
Session
Managers but not between an Avaya Aura
®
Session Manager and a B5800 Branch
Gateway.
Note:
The SIMULTANEOUS_REGISTRATIONS parameter in the SIP endpoint settings file must
be set to match the number of Avaya Aura
®
Session Managers. That is, the value has to be
1 if there is only one Session Manager and B5800 Branch Gateway is the phones’ second
controller, and the value has to be 2 if there are two Session Managers and B5800 Branch
Gateway is the phones’ third controller.
The following are the key 46xxsettings.txt file settings which affect survivability operation.
CONTROLLER_SEARCH_INTERVAL
Time in seconds that the phone waits to complete the maintenance check for monitored
controllers. Range 4 to 3600 seconds. Default 4 seconds.
DIALPLAN
Extension administration
198 Implementing the Avaya B5800 Branch Gateway November 2011
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