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All phones light screen backlight when call is hung up.
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Bobcat19 Offline
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Post: #1
All phones light screen backlight when call is hung up.
Hi there, I've got a bit of a strange issue at one of our customers who are currently running 5 T27Ps, and one W52P.

Everything works as expected, however there is one strange problem.

All the phones are in the same ring group, so they ring, someone takes the call, that works fine. Now when that person hangs up that call, all of the screen backlights on the rest of the T27Ps turn on.

So they'll be working away, all of a sudden the phone lights up (the screen), because someone else hung up a call.

All of the phones monitor each other with BLFs if that helps or makes a difference.

Is this something anyone has encountered before? And if so, what was the fix?
(This post was last modified: 03-06-2017 09:19 PM by Bobcat19.)
03-06-2017 09:18 PM
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Jensen_Yealink Offline
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Post: #2
RE: All phones light screen backlight when call is hung up.
Hi Bobcat19,

regarding the issue, please help with below:
1/ please help to get the PCAP, config.bin and syslog with level 6 of the phone that answering the call
2/ please help to get the PCAP, config.bin and syslog with level 6 on one of the phone that doesn't answering the call, then we can dig out what happened to the phone.
how to get the files please refer to below FAQ:
http://support.yealink.com/faq/faqInfo?id=313
thank you and have a nice day.
03-07-2017 03:12 AM
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complex1 Offline
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Posts: 970
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Post: #3
RE: All phones light screen backlight when call is hung up.
Hi Bobcat19,

For this “strange” issue / behaviour, please read the T27P Admin Guide page 184 and further, chapter “Backlight”

"You can configure the backlight time as one of the following types:
Always Off…
Always On…
15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight is turned off when the IP phone is inactive after a preset period of time (in seconds), but it is automatically turned on if the status of the IP phone changes or any key is pressed.
"

Best regards,
Frank.

Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
03-07-2017 10:57 AM
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Bobcat19 Offline
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Post: #4
RE: All phones light screen backlight when call is hung up.
(03-07-2017 03:12 AM)Jensen Wrote:  Hi Bobcat19,

regarding the issue, please help with below:
1/ please help to get the PCAP, config.bin and syslog with level 6 of the phone that answering the call
2/ please help to get the PCAP, config.bin and syslog with level 6 on one of the phone that doesn't answering the call, then we can dig out what happened to the phone.
how to get the files please refer to below FAQ:
http://support.yealink.com/faq/faqInfo?id=313
thank you and have a nice day.

Hi Jensen, I sent you an email with the files attached last week some time, did you receive them?
03-27-2017 08:38 PM
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Jensen_Yealink Offline
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Post: #5
RE: All phones light screen backlight when call is hung up.
Hi Bobcat19,

Sorry for the late reply. From your previous mail, all the phone monitor each other with BLF. I check the config.bin, the BLF active backlight is enabled, please disabled the feature with below parameter:
features.blf_active_backlight.enable =0
#config the backlight active or not while BLF/BLF list status change.
0---disabled
1---enabled
03-28-2017 03:32 AM
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Bobcat19 Offline
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Post: #6
RE: All phones light screen backlight when call is hung up.
(03-28-2017 03:32 AM)Jensen Wrote:  Hi Bobcat19,

Sorry for the late reply. From your previous mail, all the phone monitor each other with BLF. I check the config.bin, the BLF active backlight is enabled, please disabled the feature with below parameter:
features.blf_active_backlight.enable =0
#config the backlight active or not while BLF/BLF list status change.
0---disabled
1---enabled

Hi Jensen, is there a way to do this without re auto-provisioning them?
03-28-2017 03:44 AM
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Jensen_Yealink Offline
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Post: #7
RE: All phones light screen backlight when call is hung up.
(03-28-2017 03:44 AM)Bobcat19 Wrote:  
(03-28-2017 03:32 AM)Jensen Wrote:  Hi Bobcat19,

Sorry for the late reply. From your previous mail, all the phone monitor each other with BLF. I check the config.bin, the BLF active backlight is enabled, please disabled the feature with below parameter:
features.blf_active_backlight.enable =0
#config the backlight active or not while BLF/BLF list status change.
0---disabled
1---enabled

Hi Jensen, is there a way to do this without re auto-provisioning them?

Hi Bobcat19,

right now this feature can only config via auto provisioning.
have a nice day.
03-28-2017 03:46 AM
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