Yealink SIP-T41S Auto Provisioning Guide

Obtaining the Provisioning Server Address
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The following figure shows the example messages of obtaining the TFTP server address from an
IPv4 custom DHCP option:
Right click the root node of the custom option (e.g., option 128) shown on the above figure, and
select Copy->Bytes->Printable Text Only. Paste the copied text in your favorite text editor to
check the address, for example, tftp://192.168.1.100/.
Phone Flash
Yealink IP phones can obtain the provisioning server address from the IP phone flash. To obtain
the provisioning server address by reading the IP phone flash, make sure the configuration is set
properly.
To configure the IP phone flash via web user interface:
1. Click on Settings->Auto Provision.

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