UCM6204 Can make outgoing call but can't received incoming call



I’m using the Granstream UCM6204, with the latest firmware, when using Analog Trunk and well-configured outbound and inbound call, I’m able to make an outgoing call, but unable to receive any incoming call.

When making an incoming call, the FXO port change from blue to Orange and the highlighted text “TALKING”. but nothing in active calls.

any ideas?


Turn of CID and check if start working.

Also please read it:


1- check the inound route
2-make sure about caller id
3-set the destination of incoming calls.
I do not think there is a particular problem