[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


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All keys grey out T48G
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complex1 Offline
3CX Adv. Cert. Engineer
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Posts: 1,260
Joined: Jan 2014
Reputation: 36
Post: #2
RE: All keys grey out T48G
Hi,

Please upgrade the phone to the latest available firmware and try again.
Do not forget to reset the phone to factory default after the upgrade.
http://download.support.yealink.com/down....0.110.zip

Hope this helps.

Kind regards,
Frank.

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
06-06-2017 05:08 PM
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Messages In This Thread
All keys grey out T48G - c99hris - 06-06-2017, 02:55 PM
RE: All keys grey out T48G - complex1 - 06-06-2017 05:08 PM

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