Yealink SIP-T41S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
183
Default
0
Web UI
Features > General Information > DTMF Replace Tran
Parameter
features.dtmf.transfer <y0000000000xx>.cfg
Description
It configures the DTMF sequences to be transmitted to perform call transfer.
Valid values are: 0-9, *, # and A-E.
Note: It works only if “features.dtmf.replace_tran” is set to 1 (Enabled).
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > General Information > Tran Send DTMF
Local DTMF Tone
Local DTMF tone allows the phones to play a local DTMF tone during an active call. If this feature is enabled, you
can hear the DTMF tone when pressing the IP phone’s keypad during a call.
Topic
Local DTMF Tone Configuration
Local DTMF Tone Configuration
The following table lists the parameter you can use to configure the local DTMF tone.
Parameter
features.play_local_dtmf_tone_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to play a local DTMF tone.
Permitted
Values
0-Disabled
1-Enabled, you can hear the DTMF tone when pressing the phone’s keypad during a call.
Default
1
Web UI
Features > General Information > Play Local DTMF Tone
Voice Quality Monitoring (VQM)
Voice quality monitoring feature allows the phones to generate various quality metrics for listening quality and con-
versational quality. These metrics can be sent between the phones in RTCP-XR packets. These metrics can also be
sent in SIP PUBLISH messages to a central voice quality report collector. Yealink phones support two mechanisms
for voice quality monitoring: RTCP-XR and VQ-RTCPXR.
Topics
RTCP-XR
VQ-RTCPXR
RTCP-XR
The RTCP-XR mechanism, compliant with RFC 3611-RTP Control Extended Reports (RTCP XR), provides the met-
rics contained in RTCP-XR packets for monitoring the quality of calls. These metrics include network packet loss,
delay metrics, analog metrics, and voice quality metrics.
Topic
RTCP-XR Configuration

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