User's Manual

Name Range or Default Description
in order to check the status of
line. This setting controls the
frequency of the messages
when the Avaya
Aura
®
Session Manager line
is currently out of service.
Note that centralized
extensions use their own
settings.
Changing the default codec selection
About this task
By default, all B5800 Branch Gateway IP trunks and extensions use automatic codec
negotiation. The default negotiation order is G729(a) 8K CS-ACELP, G711 U-Law 64K, G711
A-Law 64K and G723.1 6K3 MP-MLQ.
If bandwidth between the B5800 Branch Gateway and Avaya Aura
®
sites is sufficient, we
recommend that you change the first default preference to one of the G711 codecs. Note that
the specific setting for individual branch trunks and extensions can be set to override the
system setting if necessary.
Important:
The configuration changes in the following procedure will require the B5800 Branch
Gateway system to be rebooted.
Procedure
1. Start Manager and connect to the B5800 Branch Gateway system.
2. In the left navigation pane, click System.
3. Click the Telephony tab.
4. Click the Telephony sub-tab.
5. In the Automatic Codec Preference drop-down box, select the appropriate
setting.
The Automatic Codec Preference setting is used to indicate the preferred codec
order for trunks and extensions that are using automatic codec negotiation. See
Automatic codec preference settings on page 113 for more information.
6. Click OK.
7. Select File > Save Configuration.
Initial configuration for a Centralized Branch
112 Implementing the Avaya B5800 Branch Gateway November 2011
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