
112 Chapter 5 Configuring VoIP trunks
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Setting Codecs on the CSE 1000
Use the Element Manager tool to set the codec information for the CSE 1000. This tool can be
accessed at http://<SignalingServerIP>/.
1 In the tool, select Configuration.
2 Select IP Telephony.
3 In the Node Summary Window, select the node to be configured, and click on Edit.
4 Click on DSP Profile.
5 On the list of codecs, enable or disable each by clicking on the check box beside the codec
name.
6 To view or change the codec configuration, click on the codec name.
7 Ensure the following fields are set:
8 Click Submit.
9 Click Transfer for the node that you modified.
Table 26 CSE1000 codec compatibility with endpoints
Business Communications Manager preferred codec
Refer to “Configuring media parameters” on page 74. CSE 1000 codec configuration
G.729
silence suppression is enabled
G.729
silence suppression is disabled.
G.729 AB is enabled
G.729A, and G.723 are disabled
G.729A is enabled
G.729AB, and G.723 are disabled
G.723
silence suppression is enabled
Not supported on CSE 1000.
G.723
silence suppression is disabled
G.711 ulaw, or G.711 alaw
silence suppression has no effect
G.723 is enabled
G.729A and G.729AB are disabled
G.711 is always part of the CSE 1000 configuration,
and cannot be removed.
Table 27 CSE 1000 codec configuration
Field Value Description
Codec Name <codec name> Name of the codec you selected.
Voice Payload Size <msec per frame> Choose the payload size for the codec. Use 30 ms
for interoperability with the Business
Communications Manager.
Voice Playout (Jitter Buffer)
Nominal Delay
<digits> Choose the minimum jitter buffer value you want to
allow.
Voice Playout (Jitter Buffer)
Maximum Delay
<digits> Choose the maximum jitter buffer value you want
to allow.
VAD <checkbox enabled/disabled> Check or uncheck box to enable or disable silence
suppression for the codec.
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