> On Mon, 11 Apr 2005 10:54:30 -0400 > "Robert Webb" <[EMAIL PROTECTED]> wrote: > > > > Good morning all.. > > > > I was following a discussion on this list about the TDM400P > revisions. > >It is my understanding that the current revision that one > should have > >is the Rev. H and not the E/F. I have not yet been able to > verify the > >rev stamped on the board, but zaptel is reporting that I > have the Rev. > >E/F. I just bought this card in January direct from Digium and was > >wondering if I got the wrong Rev. > >somehow?? I have been having some intermittent problems but only > >thought it was my setup. > >
I did some more testing today. I called Digium on 4/12 and they suggested some things to try, like different motherboard, switching pci slots, etc.. I did everything they asked, except for the mother switch as I do not have a different one to put in the system at this time. So, after all that, my ringing issue still persists. Too some measurements from bot the card and my POTS line in both the on-hook state and ringing state. I uses a digital multi-meter to make the measurements on both. Here are the results.... TDM400P Before slot change: On hook idle: 43.8 Volts DC 0 Volts AC Ringing: 0 Volts DC 56.4 Volts AC After slot change: On hook idle: 48.7 Volts DC 0 Volts AC Ringing: 0 Volts DC 65.5 Volts AC On my POTS line: On hook idle: 43.8 Volts DC .013 Volts AC Ringing: 50.5 Volts DC 93.9 Volts AC Could it bee that from the phone company they retain the DC offset voltage while applying a ring frequency and as it appears on the TDM it shuts off the DC offset when ringing starts. Could this be the issue with those of us in the U.S. having ringing issues with the TDM's?? Robert _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users