Audio Codecs - Yealink SIP-T48G Administrator's Manual

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
2. Select the desired value from the pull-down list of Dual-Headset.
3. Click Confirm to accept the change.
CODEC is an abbreviation of COmpress-DECompress, capable of coding or decoding a
digital data stream or signal by implementing an algorithm. The object of the algorithm
is to represent the high-fidelity audio signal with minimum number of bits while retaining
the quality. This can effectively reduce the frame size and the bandwidth required for
audio transmission.
The following table lists the audio codecs supported by each phone model:
Phone Model
SIP-T48G/T46G/T42
G/T41P/T29G
SIP-T27P/T23P/T23G/
T21(P) E2
476
Supported Audio Codecs
G722, PCMA, PCMU, G729,
G726-16, G726-24, G726-32,
G726-40, iLBC, G723_53, G723_63
G722, PCMA, PCMU, G729,
G726-16, G726-24, G726-32,
G726-40, iLBC
Default Audio Codecs
G722, PCMA, PCMU,
G729
G722, PCMA, PCMU,
G729