Yealink SIP-T46G Administrator's Guide

Configuring Audio Features
183
To configure dual headset via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Dual-Headset.
3. Click Confirm to accept the change.
CODEC is an abbreviation of COmpress-DECompress. It is capable of coding or
decoding a digital data stream or signal by implementing an algorithm. The object of
the algorithm is to represent the high-fidelity audio signal with minimum number of bits
while retaining the quality. This can effectively reduce the frame size and the bandwidth
required for transmission of the audio.
The default codecs used on IP phones are summarized in the following table:
Codec
Algorithm
Bit Rate
Sample Rate
Packetization Time
PCMA
G.711 a-law
64 Kbps
8 Ksps
20ms
PCMU
G.711 u-law
64 Kbps
8 Ksps
20ms
G729
G.729
8 Kbps
8 Ksps
20ms
G722
G.722
64 Kbps
16 Ksps
20ms
In addition to the codecs introduced above, IP phones also support the codecs:
G723_53, G723_63, G726_16, G726_24, G726_32, G726_40, iLBC, iLBC_13_3, iLBC_15_2
and GSM. You can configure the preferred codecs to use on a per-account basis
instead of using the default codecs. You can also configure the priorities for the enabled

Yealink SIP-T46G Specifications

General

Backlight	Yes
Power requirements	100-240V, DC 5V
Touchscreen	-
Display diagonal	4.3 \
Display resolution	480 x 272 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Voice codecs	G.711, G.722, G.723, G.726, G.729A, G.729B
Bluetooth	No
RJ-9 ports quantity	2
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.
Ethernet LAN (RJ-45) ports	1
Storage temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	185 mm
Width	244 mm
Height	213 mm