Yealink SIP-T48G Administrator's Guide

Configuring Audio Features
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Acoustic Echo Cancellation (AEC) is used to reduce acoustic echo from a voice call to
provide natural full-duplex communication patterns. It also increases the capacity
achieved through silence suppression by preventing echo from traveling across a
network. IP phones employ advanced AEC for hands-free operation. AEC is not
normally required for calls via the handset. In certain situation, where echo is
experienced by the remote party, AEC may be used to reduce/avoid echo when the
user uses the handset.
Note
Procedure
AEC can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure AEC.
Parameter:
voice.echo_cancellation
Local
Web User Interface
Configure AEC.
Navigate to:
http://<phoneIPAddress>/
servlet?p=settings-voice&
q=load
Details of the Configuration Parameter:
Parameter
Permitted Values
Default
voice.echo_cancellation
0 or 1
1
Description:
Enables or disables the AEC (Acoustic Echo Canceller) feature on the IP phone.
0-Disabled
1-Enabled
Web User Interface:
Settings->Voice->Echo Cancellation->ECHO
Utilizing acoustic echo cancellation will introduce a small delay increase into audio path
which might cause a lower voice quality.

Yealink SIP-T48G Specifications

General

Expansion module support	Yes
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	-
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
AC adapter input voltage	100 - 240 V
Number of handles included	1 pc(s)

Weight and Dimensions

Width	266 mm
Height	185 mm