Yealink SIP-T41S User Manual

User Guide for T4 Series IP Phones
66
Unlocking the Phone
Procedure:
1. Press any locked key, the LCD screen prompts you to enter an unlock PIN.
On the SIP-T48S/T48G IP phone, press any locked key or tap the touch screen.
2. Enter the desired PIN in the Unlock PIN field.
3. Press OK.
The lock icon disappears from the LCD screen.
You can long press the # key or wait for a period of time (if configured) to lock the phone
again.
Note
Deactivating the Phone Lock
Procedure:
1. Navigate to Menu->Basic->Phone Lock.
For the SIP-T42S/T42G/T41S/T41P/T40G/T40P IP phone, navigate to
Menu->Settings->Basic Settings->Phone Lock.
2. Enter the desired PIN (default PIN: 123) in the Unlock PIN field, and then press OK.
For the SIP-T48S/T48G IP phone, tap Save.
3. Select Disabled from the Lock Enable field.
You can also unlock the phone by administrator password. When you enter the administrator
password to unlock the phone, the phone will turn to the Change PIN screen.
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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