Hi, I hope somebody can help me out. I am using a H323 gateway (Cisco 2811) connected to an ISDN 30. I have full outbound connectivity from the Cisco phone to the PSTN. Ring tone etc is present.
When I call inbound to a specific IPT phone from the PSTN the cisco phone rings however the PSTN has no ring tone just remains silent.
I have checked the network connectivity between the phone and gateway, gateway and call manager etc. All appears to be fine. With the Cisco ringing there is clearly some connectivity present.