Yealink SIP-T58V/A

Configuring Audio Features
611
Codec
Algorithm
Reference
Bit Rate
Sample
Rate
Packetization
Time
G726-24
G.726
RFC 3551
24 Kbps
8 Ksps
20ms
G726-32
G.726
RFC 3551
32 Kbps
8 Ksps
20ms
G726-40
G.726
RFC 3551
40 Kbps
8 Ksps
20ms
G723_53/
G723_63
G.723.1
RFC 3551
5.3 Kbps
6.3 Kbps
8 Ksps
30ms
iLBC
iLBC
RFC 3952
15.2 Kbps
13.33 Kbps
8 Ksps
20ms
30ms
Opus
Opus
RFC 6716
8-12 Kbps
16-20 Kbps
28-40 Kbps
48-64 Kbps
64-128 Kbps
8 Ksps
12 Ksps
16 Ksps
24 Ksps
48 Ksps
20ms
Note
Codecs and priorities of these codecs are configurable on a per-line basis. The attribute “rtpmap”
is used to define a mapping from RTP payload codes to a codec, clock rate and other encoding
parameters.
The corresponding attributes of the codec for SIP-T58V/T58A/T56A are listed as follows:
Codec
Configuration
Methods
Priority
RTPmap
G.722.1c(48kb/s)
Configuration Files
Web User Interface
1
121
G.722.1c(32kb/s)
Configuration Files
Web User Interface
2
122
G.722.1c(24kb/s)
Configuration Files
Web User Interface
3
123
G.722.1(24kb/s)
Configuration Files
Web User Interface
4
124
G722
Configuration Files
Web User Interface
5
9
PCMU
Configuration Files
6
0
The network bandwidth necessary to send the encoded audio is typically 5~10% higher than the
bit rate due to packetization overhead. For example, a two-way G.722 audio-only call at 64 Kbps
consumes about 135 Kbps of network bandwidth.