Yealink T5 Series Administrator's Guide

Audio Features
281
Codec Algorithm Reference Bit Rate Sample Rate Packetization Time
G722 G.722 RFC 3551 64 Kbps 16 Ksps 20ms
PCMA G.711 a-law RFC 3551 64 Kbps 8 Ksps 20ms
PCMU G.711 u-law RFC 3551 64 Kbps 8 Ksps 20ms
G729 G.729 RFC 3551 8 Kbps 8 Ksps 20ms
G726-16 G.726 RFC 3551 16 Kbps 8 Ksps 20ms
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 Kps
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
The network bandwidth necessary to send the encoded audio is typically 5~10% higher than the bit rate due to pack-
etization overhead. For example, a two-way G.722 audio call at 64 Kbps consumes about 135 Kbps of network bandwidth.
The Opus codec supports various audio bandwidths, defined as follows:
Abbreviation Audio Bandwidth Sample Rate (Effective)
NB (narrowband) 4 kHz 8 kHz
MB (medium-band) 6 kHz 12 kHz
WB (wideband) 8 kHz 16 kHz
SWB (super-wideband) 12 kHz 24 kHz
FB (fullband) 20 kHz 48 kHz
The following table lists the audio codecs supported by each phone model:
Phone Model Supported Audio Codecs Default Audio Codecs
T58V/T58A/T56A/CP960
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-
G.722.1c(48kb/s), G.722.1c
(32kb/s), G.722.1c(24kb/s), G.722.1

Yealink T5 Series Specifications

General

Brand	Yealink
Model	T5 Series
Category	IP Phone
Language	English