Yealink SIP-T20P User Manual

User Guide SIP-T20P IP Phone
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Why can I not receive calls?
 Check the SIP registration with your system administrator.
 Check DND (Do Not Disturb) mode is turned off on your phone. Refer to Do Not
Disturb (DND) on page 53.
 Check call forward feature is disabled on the phone. Refer to Call Forward on
page 55.
 Check whether the caller number is stored in the blacklist directory. Refer to
Blacklist on page 28.
Why is my handset not working?
Check to ensure that the handset cord is fully connected to both the handset jack on the
phone and handset. Refer to Phone Installation on page 11.
Why is my headset not working?
 Check to ensure that the headset cord is fully connected to the headset jack on the
phone. Refer to Phone Installation on page 11.
 Check to ensure that the headset mode is activated. Refer to Headset
Activation/Deactivation on page 30.
 Check to ensure that the headset volume is adjusted to an appropriate level. Refer
to Volume on page 22.
What will happen if I connect both PoE cable and power adapter? Which has the
priority?
The phones manufactured before February 2010 use the power adapter preferentially,
otherwise the phones use PoE preferentially.
How to change the user password?
You can change the user password via web user interface:
1. Click on Security->Password.
2. Enter the current user password in the Current Password field.
3. Enter the new user password in the New Password and Confirm Password fields.
4. Click Confirm to accept the change.
You can also contact your system administrator for help.
How to reboot the phone?
To reboot the IP phone via web user interface:
1. Click on Upgrade->Basic.

Yealink SIP-T20P Specifications

General

Keypad number of keys	31
Speakerphone	Yes
Voice codecs	G.711, G.722, G.723.1, G.726
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Touchscreen	-
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Bluetooth	No
Security algorithms	HTTPS, SSL/TLS
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
Power consumption (typical)	2.6 W
Operating relative humidity (H-H)	10 - 95 %
Compliance industry standards	IEEE 802.3af
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	200 mm
Width	185 mm
Height	90 mm
Weight	770 g