Yealink SIP-T40G Administrator's Guide

Table of Contents
5
Custom Handset Related Configurations
143
Handset Firmware Upgrade Configuration
144
Audio Features
146
Alert Tone
146
Alert Tone Configuration
146
Touch Tone
148
Touch Tone Configuration
148
Ring Tones
148
Custom Ringtone Limit
148
Ringtone Configuration
149
Distinctive Ring Tones
151
Supported Alert-Info Headers Format
151
Alert-Info: Bellcore-drN
151
Alert-Info: ringtone-N/Alert-Info: ringtone-RingN.wav (or Alert-Info: MyMelodyN/Alert-Info:
MyMelodyRingN.wav) 152
Alert-Info: <URL >
153
Alert-Info: info=info text;x-line-id=0
154
Distinctive Ring Tones Configuration
154
Ringer Device
155
Ringer Device Configuration
156
Audio Volume
156
Ringer Volume Configuration
156
Sending Volume Configuration
157
Tones
159
Supported Tones
159
Tones Configuration
160
Audio Codecs
165
Supported Audio Codecs
165
Audio Codecs Configuration
167
Packetization Time (PTime)
170
Supported PTime of Audio Codec
170
PTime Configuration
171
Early Media
171
Early Media Configuration
171
Headset Prior
172
Headset Prior Configuration
172
Dual Headset
173
Dual Headset Configuration
173
Acoustic Clarity Technology
173
Acoustic Echo Cancellation (AEC)
174
AEC Configuration
174
Noise Suppression
174
Noise Suppression Configuration
174
Background Noise Suppression (BNS)
175
Automatic Gain Control (AGC)
175

Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm