Yealink SIP-T41S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
173
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > General Information > Headset Prior
Parameter
features.headset.ctrl_call.enable <y0000000000xx>.cfg
Description
It enables or disables the user to initiate or end a call by pressing the HEADSET key.
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Supported
Devices
All phones except CP920
Dual Headset
The dual headset allows you to use two headsets on one IP phone. To use this feature, you need to physically con-
nect two headsets to the headset and handset jacks respectively. Once the IP phone connects to a call, the headset
connected to the headset jack has the full-duplex capability, with the headset connected to the handset jack is only
used for listening.
Note: The dual headset is not applicable to the Bluetooth headset and USB headset. It is not applicable to CP920 phones.
Topic
Dual Headset Configuration
Dual Headset Configuration
The following table lists the parameter you can use to configure dual headset.
Parameter
features.headset_training <y0000000000xx>.cfg
Description
It enables or disables the dual headset feature.
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, users can use two headsets on one phone. When the IP phone joins a call, the headset
connected to the headset jack has the full-duplex capability, with the headset connected to the hand-
set jack is only used for listening.
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > General Information > Dual Headset
Acoustic Clarity Technology
To optimize the audio quality in your network, Yealink phones support the acoustic clarity technology: Acoustic
Echo Cancellation (AEC), Background Noise Suppression (BNS), Automatic Gain Control (AGC), Voice Activity
Detection (VAD), Comfort Noise Generation (CNG) and jitter buffer.
Topics

Yealink SIP-T41S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Wi-Fi	No
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume control	Digital
Number of programmable keys	6
Lines quantity	6 lines
Phonebook capacity	1000 entries
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Certification	CE
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm