Yealink SIP-T21P User Manual

Troubleshooting
125
How to export system log?
We may need you to provide debug log information to help analyze problem. By
default, you can export the debug system log information to local PC.
To export the system log to local PC via web user interface:
1. Click on Upgrade->Advanced.
2. Select 6 from the pull-down list of System Log Level.
The default system log level is 3.
3. Click Confirm to accept the change.
The web user interface prompts “Do you want to restart your machine?”. The
configuration will take effect after reboot.
4. Click OK to reboot the phone.
After the IP phone finishes reboot, the system log level is set as 6, the debug level.
5. Mark the Local radio box in the Export System Log field.
6. Click Export to open file download window, and then save the file to your local
system.
You can also export the system log to a syslog server. Contact your system administrator
for more information.
How to export/import phone configurations?
We may need you to provide the phone configurations to help analyze your problem. In
some instance, you may need to import configurations to the phone.
To export the phone configurations via web user interface:
1. Click on Settings->Configuration.

Yealink SIP-T21P Specifications

General

Display	132 x 64-pixel graphical LCD
Network	10/100 Mbps Ethernet
SIP Accounts	2
Wall Mountable	Yes
Audio Features	HD Voice
Protocols	SIP v1 (RFC2543), v2 (RFC3261)
Voice Codecs	G.711(A/μ), G.729AB, G.726, G.722
Phonebook	1000 entries
Call Features	Call hold, call waiting, call transfer, call forward, 3-way conferencing
Security	SRTP, TLS, 802.1x, HTTPS
Ethernet Ports	2 x RJ45 10/100 Mbps
Power Supply	Power over Ethernet (PoE) or optional power adapter
Operating Humidity	10% to 90% (non-condensing)
Languages	Supports multiple languages
PoE	Yes (802.3af)
Operating Temperature	-10°C to 50°C