[BUG?]Screen backlight turn on on SIP Keep alive

[Kaya84]

(07-14-2017 09:45 AM)Travis Wrote:  

(07-13-2017 03:06 PM)Kaya84 Wrote:  Hi,
I upgraded a YEALINK T21P-e2 firmware to latest one ( 52.81.0.110 ) and the backlight bug suddenly appeared (referring to http://forum.yealink.com/forum/showthrea...ode=linear ).

Hi,

T22P is a really old model and already end of line, As we can see, there are several "power saving" messages on syslog, but T22 doesn't have such feature, so I believe this is the different issue. would you please describe the issue detail happen on T21PE2 once again?

Please kindly reset the phone to factory and test again, if the issue still remain, please provide me all THREE trace files:
please kindly offer us trace files for further analysis as below:
a. Level 6 syslog
b. PCAP trace
c. Config.bin
You can get the guide from this link to see how to export the issue data(trace files):
http://support.yealink.com/faq/faqInfo?id=311

Wait for your update.

Regards,
Travis

Is a T21P-e2 phone, not T22 !