
132 Chapter 7 Optional VoIP trunk configurations
P0604630 03
Configuring Codec Compatibility
The default codec settings for a CSE1000 are not compatible with those used by a Business
Communications Manager system. In order to successfully make IP trunk calls between a Business
Communications Manager and the CSE 1000, the codec configuration on both the Business
Communications Manager and the CSE 1000 must coincide, as shown in the table below. As well
any configured codecs on the CSE 1000 must have their payload size set to 30 ms.
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 Edit.
4 Click 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 the codec name.
Caution: The CSE 1000 can only register five codecs at once. This can include: G-711
mu-law, G.711 a-law, T.38, G.711CC, and either G.729A, G729AB, or G.723.1. It is
important to that you disable the unused codecs. This ensures that the required codecs get
registered with the DSP. Failure to disable unused codecs could result in the wrong codecs
being registered with the DSP, which would create call failures.
Table 36 CSE1000 codec compatibility with endpoints
Business Communications Manager preferred codec
Refer to “Configuring media parameters” on page 85. 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.
Kommentare zu diesen Handbüchern