Yealink SIP-T48U Administrator's Guide

Audio Features
168
When the audio codec is G.722.1c (24kb/s), the default value is 1;
When the audio codec is G.722.1 (24kb/s), the default value is 1;
When the audio codec is G722, the default value is 1;
When the audio codec is PCMU, the default value is 1;
When the audio codec is PCMA, the default value is 1;
When the audio codec is G729, the default value is 1;
When the audio codec is G726-16, the default value is 0;
When the audio codec is G726-24, the default value is 0;
When the audio codec is G726-32, the default value is 0;
When the audio codec is G726-40, the default value is 0;
When the audio codec is G723_53, the default value is 0;
When the audio codec is G723_63, the default value is 0;
When the audio codec is Opus, the default value is 0;
When the audio codec is iLBC_15_2kbps, the default value is 0;
When the audio codec is iLBC_13_33kpbs, the default value is 0;
Web UI
Account > Codec > Audio Codec
Parameter
account.X.codec.<payload_type>.priority
[1]
<MAC>.cfg
Description
It configures the priority of the enabled audio codec.
The name of the audio codec:
g722_1c_48kpbs-G.722.1c (48kb/s)
g722_1c_32kpbs-G.722.1c (32kb/s)
g722_1c_24kpbs-G.722.1c (24kb/s)
g722_1_24kpbs-G.722.1 (24kb/s)
g722-G722
pcmu-PCMU
pcma-PCMA
g729-G729
g726_16-G726-16
g726_24-G726-24
g726_32-G726-32
g726_40-G726-40
g723_53-G723_53
g723_63-G723_63
opus-Opus

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm