
58 Chapter 3 Installing IP telephones
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Figure 8 IP Terminal status dialog box
5 You can change the Codec or JitterBuffer settings for the terminal. All other fields are
read-only. The table below describes the two configurable fields on this screen.
6 Click the Save button.
Table 16 IP Terminal Status fields
Field Value Description
Codec Default
G.711-aLaw
G.711-uLaw
G.711 with VAD
G.729
G.729 with VAD
G.723
Specifying a non-default CODEC for a telephone allows you
to override the general setting. You might, for example, want
to specify a low bandwidth CODEC (g.729) for a telephone
that is on a remote or busy sub-net. Refer to “Choosing a
codec” on page 45.
Note: You can only change the codec on a configured IP
telephone if it is online to the Business Communications
Manager, or if Keep DN Alive is enabled for an offline
telephone.
JitterBuffer Auto
Default
None
Small
Medium
Large
Increase the jitter buffer size for any telephone that has poor
network connectivity to the Business Communications
Manager.
Refer to “Choosing a Jitter Buffer” on page 46.
Note: You can only change the jitter buffer on a configured IP
telephone if it is online to the Business Communications
Manager, or if Keep DN Alive is enabled for an offline
telephone.
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