We are using FreePBX 13.0.191.11 along with Grandstream GXP-1625 phones in our campus.
When a phone (say extension A) is busy on another call and someone (say B) dials the extension A, the phone A will ring on line 2 and user B will hear the ring and it seems that A is not picking up the call.
I have disabled Call waiting on extension A but same issue persists.
I am not very much familiar with FreePBX, so I would appreciate if someone can help me out here…
Thanks.