Grandstream GXW-4024 - Keep on Ringing Even if Line is in use

Hi guys I am able to use Grandstream GXW-4024 with FreePBX Distro both incomming and outgoing call.

One thing that is weird here… when I will call 1 line of the fxs ports of GXW-4024 the assign extension number will keep on ringing even if that line is being use. How can I configure it to make it busy if the number you dial is in use.?


What do you have call waiting set to on the extension. If Yes then the call will ring even when the line is busy. Set to No if you don’t wan this to happen.