Yealink SIP-T20P User Manual

Troubleshooting
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2. Click Reboot to reboot the IP phone.
Note
How to reset your phone?
Reset your phone when other Troubleshooting suggestions do not correct the problem.
You need to note that all customized settings will be overwritten after resetting. So we
recommend asking your system administrator for advice before resetting your phone.
To reset your phone via phone user interface:
1. Press .
2. Select Settings->Advanced (password: admin).
3. Press or to scroll to Reset Factory, and then press .
The LCD screen prompts the following message:
4. Press to confirm.
Note
How to upgrade firmware?
To upgrade firmware via web user interface:
1. Click on Upgrade->Basic.
2. Click Browse to select the firmware from your local system.
3. Click Upgrade to upgrade the firmware.
The browser pops up the dialog box ―Firmware of the IP Phone will be updated. It
will take 5 minutes to complete. Please don't power off!‖.
4. Click OK to confirm upgrading.
How to export PCAP Trace?
We may need you to provide a PCAP Trace to help analyze your problem.
To export a PCAP Trace via web user interface:
1. Click on Upgrade->Advanced.
2. Click Start to begin recording signal traffic.
3. Recreate the error to be documented in the trace.
Any reboot of your phone may take a few minutes.
Reset of your phone may take a few minutes.
Reset to
Factory?

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