Yealink SIP-T38G Administrator's Guide

Configuring Audio Features
177
Acoustic echo cancellation (AEC) is used to remove acoustic echo from a voice
communication in order to improve the voice quality. It also increases the capacity
achieved through silence suppression by preventing echo from traveling across a
network. The IP phone employs advanced AEC for hands-free operation. Echo
cancellation is done using the echo canceller.
Procedure
AEC can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure the AEC feature.
For more information, refer to
Acoustic Echo Cancellation on
page 302.
Local
Web User Interface
Configure the AEC feature.
Navigate to:
http://<phoneIPAddress>/cgi-bi
n/cgiServer.exx?page=Phone-V
oice.htm
To configure AEC via web user interface:
1. Click on Phone->Voice.
2. Select the desired value from the pull-down list of Echo Canceller.
3. Click Confirm to accept the change.

Yealink SIP-T38G Specifications

General

Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Keypad number of keys	48
Touchscreen	-
Display resolution	480 x 272 pixels
Display number of colors	16.78 million colors
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Voice codecs	G.711, G.722, G.723.1, G.726
Bluetooth	No
Security algorithms	802.1x RADIUS, HTTPS, SSL/TLS
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
Power consumption (typical)	4.6 W
Operating relative humidity (H-H)	10 - 95 %
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Compliance industry standards	IEEE 802.3af
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	204 mm
Width	273 mm
Height	42 mm
Weight	1050 g