Yealink SIP-T52S Administrator's Guide

Configuring Audio Features
855
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
Note
The following table summarizes the supported audio codecs on IP phones:
Codec
Algorithm
Reference
Bit Rate
Sample
Rate
Packetization
Time
G.722.1c
G.722.1
RFC 5577
48 Kbps
32 Ksps
20ms
G.722.1c
RFC 5577
32 Kbps
32 Ksps
20ms
G.722.1c
RFC 5577
24 Kbps
32 Ksps
20ms
G.722.1
G.722.1
RFC 5577
24 Kbps
16 Ksps
20ms
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
8 Ksps
20ms
The SIP-T40P/T40G/T23P/T23G/T21(P) E2/T19(P) E2 IP phones support using WB for opus
encoding; and using NB, MB, WB, SWB and FB for opus decoding.
The SIP-T54S/T52S/T48S/T46S/T42S/T41S/T27G IP phones support using WB (default) or NB for
opus encoding; and using NB, MB, WB, SWB and FB for opus decoding.
CP920 IP phones support using any one from NB to WB for opus encoding; and using NB, MB,
WB, SWB and FB for opus decoding.
CP920 IP phones support using

Yealink SIP-T52S Specifications

General

Touchscreen	-
Display diagonal	2.8 \
Backlight display	Yes
Display resolution	320 x 240 pixels
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
Bluetooth version	2.1+EDR
Security algorithms	802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume control	Digital
Operating temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Front camera	No
Operating system installed	Linux

Weight and Dimensions

Depth	212 mm
Width	211.6 mm
Height	166.8 mm