Administrator’s Guide for SIP-T5 Series Smart Media Phones
610
The audio codec that the phone uses to establish a call should be supported by the SIP server.
When placing a call, the IP phone will offer the enabled audio codec list to the server and then
use the audio codec negotiated with the called party according to the priority.
Supported Audio Codecs
The following table lists the audio codecs supported by SIP-T58V/T58A/T56A IP phones:
G.722.1c(48kb/s), G.722.1c(32kb/s),
G.722.1c(24kb/s), G.722.1(24kb/s),
G722, PCMU, PCMA, G729, G726-40,
G726-32, G726-24, G726-16, iLBC,
G723_53, G723_63, Opus
G.722.1c(48kb/s),
G.722.1c(32kb/s),
G.722.1c(24kb/s),
G.722.1(24kb/s), G722,
PCMU, PCMA, G729
The Opus codec supports various audio bandwidths, defined as follows:
The following table summarizes the supported audio codecs on IP phones: