T42g CTI Not Functioning Properly

[JimD]

Not sure what I am missing here, I thought CTI was pretty straightforward and automatic on Yealink phones.

3CX 14
Windows 3CX Phone (Set to CTI and shows phone connected)
Yealink T42g (29.81.0.110)
Windows desktop connected to network via the PC port on phone

3CX phone has no control over the desk phone. If I answer the softphone, the user doesnt get answered, and the deskphone keeps ringing. Call starts once deskphone is answered. Further, hanging up on the softphone does nothing.

Is this right?

Thanks!
-Jim

 

[YiannisH_3CX]

Hello @[email protected]

Please consider upgrading to V15.5 and take advantage of the new web client that uses uaCSTA and can control a deskphone even if a phone is provisioned using STUN or is behind an SBC. You will need to run the latest supported firmware from 3CX and the latest templates.

 

[tvdir]

Are the PC and T42G in the same VLAN? Is HTTP traffic allowed from the PC to the phone?
Try to take a packet capture on the yealink while placing/answering a call using CTI, and check if you see the HTTP request coming from the PC.