Yealink SIP-T27G Administrator's Guide

Troubleshooting Methods
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3. Select 6 from the Local Log Level drop-down menu.
The default local log level is “3”.
4. Enter the limit size of the log files in the Max Log File Size field.
5. Click Confirm to accept the change.
6.
Reproduce the issue.
7. Click Export to open the file download window, and then save the file to your local system.
A diagnostic file named <MAC>-syslog.zip is successfully exported to your local system.
Uploading Log to the USB Flash Drive
The phone log can be uploaded to the connected USB flash drive.
It is not applicable to T48G/T46G/T42G/T41P/T40P/T40G/T29G/T23P/T23G//T21(P) E2/T19(P) E2 phones.
Procedure
1. From the web user interface, navigate to Settings > Configuration.
2. In the Enable Local Log field, select Enabled or ON.
3. In the USB Auto Exporting Syslog field, select Enabled or ON.
4. Select the desired value from the Local Log Level drop-down menu.
The default local log level is “3”.
4. Enter the limit size of the log files in the Max Log File Size field.
5. Click Confirm to accept the change.
6.
Reproduce the issue.
The log files are uploaded to your USB flash drive.
Viewing the Log Files
You can verify whether you got the correct log through the following key fields:
l <0+emerg >
l <1+alert >
l <2+crit >
l <3+error >
l <4+warning >
l <5+notice >
l <6+info >
The default local log level is 3.
The following figure shows a portion of a boot log file (for example, boot.log):

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm