Yealink SIP-T54S Administrator's Manual page 895

Configuring Audio Features
Permitted
Parameters Default
Values
Web User Interface:
Account->Codec->Audio Codec
Phone User Interface:
None
Refer to the
account.X.codec.Y.payload_type
Refer to the
following
following content
(X ranges from 1 to 16, Y ranges from 1 to 12)
content
Description:
Configures the audio codec for account X.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
X is equal to 1 (for SIP-T19(P) E2/CP860)
Y ranges from 1 to 12 (for SIP-T54S/T52S/T48S/T46S/T42S/T41S/T27G)
Y ranges from 1 to 11 (for SIP-T48G/T46G/T42G/T41P/T29G/CP860)
Y ranges from 1 to 10 (for SIP-T40P/T40G/T23P/T23G/T21(P) E2/T19(P) E2)
Y ranges from 1 to 9 (for SIP-T27P)
Permitted Values:
G722, PCMU, PCMA, G729, G726-16, G726-24, G726-32, G726-40, iLBC, G723_53, G723_63,
opus
For SIP-T54S/T52S/T48S/T46S/T42S/T41S:
When Y=1, the default value is PCMU;
When Y=2, the default value is PCMA;
When Y=3, the default value is G723_53;
When Y=4, the default value is G723_63;
When Y=5, the default value is G729;
When Y=6, the default value is G722;
When Y=7, the default value is iLBC;
When Y=8, the default value is G726-16;
When Y=9, the default value is G726-24;
When Y=10, the default value is G726-32;
When Y=11, the default value is G726-40;
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