[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.

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T48G with SfB Firmware can't Signing in
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Steve.baptista Offline
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Post: #3
RE: T48G with SfB Firmware can't Signing in
Can you let me know where you got FW (
Website only has

(03-02-2016 05:47 AM)andre.hagmann@umb.ch Wrote:  I have updated my YEALINK T48G with latest Skype for Business Firmware ( and valid license key. The device is configured to get DHCP Option 120.

I use following Login Information on Account/Register page

Login address = <username>@Domain.com
Register Name = <username>@Domain.com
+ Password

After singning in on the Website, I receive following message

Register Failed

the root Certificate from internal CA (Security/Trusted Certificate) have been uploaded to the device

Question: as my DHCP Server have been configured with DHCP Option from Lync Common Area Phones.

Can YEALINK use the same DHCP Option 120 as for Lync Common Area Phones ?

any experience from the field ?
03-19-2016 01:49 AM
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RE: T48G with SfB Firmware can't Signing in - Steve.baptista - 03-19-2016 01:49 AM

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