We have a networked 7400 that is experiencing phantom ringing and intermittent no audio issues on the PRI. These issues only seem to happen on incoming calls from the on-site PRI. Oddly enough, this site is also experiencing strange characters showing on the keysets and the time on the display will change for a few minutes then change back to the correct time. AT&T has done testing on the PRI and has not found any problems. I have replaced the cabinet, LP40, CRM, MP40, and PRI card. The phone system has been reprogrammed, upgraded to 4.75 and the media card has been replaced. The network is a VPN. We are out of ideas, any suggestions would be appreciated.


Chris Taylor
Intouch Communications
Omaha, Ne