Call Transfer stopped working

[Joe Archibald]

Hi
I am having an issue with transfers. This started yesterday that when a user transfers a call,

press Xfer, dial extension, press Xfer again
or even a blind transfer from the sidecar

it transfers the call, but still shows on the phone that the call is active on Line1 and you can't disconnect it. Drop, picking up line 1, pickup/hangup handset doesn't do anything.

This only seems to happen on incoming calls. Transfer between extensions seems to work fine

3CX pro v16.0.1078
Aastra 57i phones v3.3.1

 

[ChrisC_3CX]

Hey @Joe Archibald,

Are these devices the only ones having this issue? If yes, are they local to the 3CX PBX? Just note that, as per our guide: https://www.3cx.com/sip-phones/aastra/ these devices cannot be used remote to the 3CX PBX in case this applies in your scenario. Also, do bear in mind that they are EoL devices and will receive no further updates nor development. You may try making sure that the firmware used is the exact same one as that mentioned in the guide and also may want to try factory resetting them and reprovisioning them with the 3CX default template (in case you have a custom one).

You might also want to consider having a look at our list of 3CX Supported phones which are, as implied, fully supported and compatible with 3CX: https://www.3cx.com/sip-phones/

 

[Joe Archibald]

I think that I know what's going on.

The Aastra phones are working just fine eventhough they are not supported anymore.

and the only phones that are "fully supported" is the 3CX apps.