Yealink SIP-T41S Administrator's Guide

Network Configurations
55
Web UI
Network > NAT > STUN > Active
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > NAT > NAT Status
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > NAT > NAT Status
Parameter
static.sip.nat_stun.server <y0000000000xx>.cfg
Description
It configures the IP address or domain name of the STUN server.
Note: It works only if “static.sip.nat_stun.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Web UI
Network > NAT > STUN > STUN Server
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > NAT > STUN Server
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > NAT > STUN Server
Parameter
static.sip.nat_stun.port <y0000000000xx>.cfg
Description
It configures the port of the STUN server.
Note: It works only if “static.sip.nat_stun.enable” is set to 1 (Enabled).
Permitted
Values
Integer from 1024 to 65535
Default
3478
Web UI
Network > NAT > STUN > STUN Port (1024~65535)
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > NAT > STUN Port
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > NAT > STUN Port
Parameter
static.ice.enable
[2]
<y0000000000xx>.cfg
Description
It enables or disables the ICE (Interactive Connectivity Establishment) feature.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Network > NAT > ICE > Active
Parameter
static.sip.nat_turn.enable
[2]
<y0000000000xx>.cfg
Description
It enables or disables the TURN (Traversal Using Relays around NAT) feature.
Permitted
Values
0-Disabled
1-Enabled

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