Yealink SIP-T41S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
556
Verifying the firmware version
Press the OK/√key or select Menu > Status when the phone is idle to check the firmware version. For example
28.82.0.20.
Item Description
1 28
Firmware ID.
The firmware ID for each IP phone model is:
l 97: T57W
l 96: T54W
l 95: T53W/T53
l 108: T48U/T46U/T43U
l 116: T42U
l 35: T48G
l 28: T46G
l 66: T48S/T46S/T42S/T41S
l 29: T42G
l 36: T41P
l 54: T40P
l 76: T40G
l 46: T29G
l 69: T27G
l 44: T23P/G
l 52: T21(P) E2
l 53: T19(P) E2
l 78: CP920
2 82
Major version.
Note: The larger it is, the newer the major version is.
3 0 A fixed number.
4 20
Minor version.
Note: With the same major version, the larger it is, the newer the minor version is.
The IP phone does not update the configurations
Do one of the following:
l Ensure that the configuration is set correctly.
l Reboot the phone. Some configurations require a reboot to take effect.

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