You can specify, by name, the exact codecs to offer in the Device Configuration file. This grants the
administrator full control over the audio settings used for inbound and outbound calls. The following
table is a sample of Device Configuration file entries for audio codec configuration.
Table 72: Sample Device Configuration file codec entries
AUDIO_CODEC1 PCMA standard a-law
AUDIO_CODEC2 PCMU standard u-law
AUDIO_CODEC3 G729 729 codec
AUDIO_CODEC7 G723 high-compression codec
The following table lists the codec identifiers for the Device Configuration file.
Table 73: Codec identifiers for the Device Configuration file
PCMA
PCMU
G729
G723
The IP Deskphone displays the codecs listed in the exact order that they are listed in the Device
Configuration file.
The list of codecs specified in the Device Configuration file determines the list of codecs that are
available for selection on the IP Deskphone.
Two fields in the device configuration file, G729_ENABLE_ANNEXB and G723_ENABLE_ANNEXA
are used to enable or disable AnnexB and AnnexA support by G729 and G723 codecx, respectively.
These flags can have the following values: YES, NO (No is the default value).
Important:
If codecs are not specified, the default list used by the current version of the IP Deskphone is
PCMU, PCMA, G.729.
To stop the IP Deskphone from using a specific codec, you must change the its entry in the Device
Configuration file to a different codec, and then clear the value, which disables the codec entry. If
you remove all codecs from the allowed list, the IP Deskphone resets to the default list of codecs.
Important:
To reset the phone to the default list of codecs, it is necessary to remove the values against
each AUDIO_CODECx item in the Device Configuration file.
For example:
AUDIO_CODEC1 PCMA standard a-law
AUDIO_CODEC2 PCMU standard u-law
AUDIO_CODEC3 G729 729 codec
AUDIO_CODEC4 G722 wideband codec
AUDIO_CODEC5 G723 high-compression codec
Audio codecs
240 SIP Software for Avaya 1200 Series IP Deskphones-Administration March 2015
Comments? infodev@avaya.com
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