Grandstream Line Hunting GXW4104

[karjune]

Recently deployed 3CX with GXW4104 FXO Gateway. Customer has line hunting enabled on the POTS line. Now, grandstream and/or 3CX is unable to process the 2nd call coming on the fxo port that's currently in use. The line is ringing but pbx shows just the single active call.

Any ideas?

 

[JohnS_3CX]

Hi,

I imagine you are using at least 2 or more POTS cables out of the 4 the Grandstream has.

You will need to find out whether the Grandstream understands that it has a another call on another port, and whether it sends an INVITE to 3CX. If this is not happening, there won't be much you can do from the 3CX side.

You can run a packet capture on 3CX to see if a second invite comes from the IP of the Grandstream.