Hi all, Im using 3CX with a Grandstream GXP-4104 gateway. There are 3 PSTN lines connected to the gateway. An incoming call is transfered to the digital receptionist just fine and if an extension answers all is well. But if the caller decides to hang up, the PSTN line is left as "Line 1: busy, PSTN Incoming" on the gateway and in 3cx "10000 Line No: 1 00:14:30 Status: Connected:". This remains like this even if you try to make a call, reboot the gateway, or 3cx itself. It is only cleared when i unplug the PSTN line from the gateway and plug it back in. "Enable Tone Disconnect = Yes" is set on the gateway configuration. Any ideas on what i can do to stop this from happening?