My OBi110 setup with Google Voice & Alarm System Works but other problems
kenobi:
Hello,
I have the OBi110 setup with GV as SP1 and Callcentric as SP2 for E911. I also ported my former AT&T PSTN phone # over to Google Voice (using the port to Go Phone to GV approach)
I was also able to get my Alarm monitoring service to work, but only if I use set DTMF to Inband for GV.
The only real problem I have now is when I call my own phone number from a phone in the house to listen to voicemail, GV does not register any key press I make on the phone.
Does anyone have any ideas of any other configuration I need to do so I can get the google voice mail system to recognize key presses when using Inband for the DTMF method, which I need for my alarm system to work?
Thanks.
RonR:
Try instead:
Service Providers -> ITSP Profile A -> General -> DTMFMethod : Auto
Service Providers -> ITSP Profile A -> General -> X_UseFixedDurationRFC2833DTMF : (checked)
kenobi:
Ron, R I should have stated that I tried 'Auto' for the DTMF method as you have stated.
Problem was that the alarm monitoring did not work using Auto. My alarm system (DSC Power 832) uses the 'ContactID' protocol.
RonR:
But did you try Auto + X_UseFixedDurationRFC2833DTMF?
Stewart:
ContactID sends 10 digits per second (50 ms on, 50 ms off), so RFC2833 won't work.
Possible solutions:
Use Callcentric for the alarm calls. They won't be free, but if it's just a weekly test that's no big deal. If you have the alarm report every opening and closing, you might try another path, e.g. SIPBroker or Tollfreegateway (assuming that the central station is a toll-free number). I'd be concerned, though, that it would be less reliable; you could use the direct CC path for the backup number (if your panel has such). I hope that your system has cellular backup, too. IMO naked VoIP is not reliable enough for an alarm system. See my comments in
http://www.dslreports.com/forum/r25200984-Is-Voipo.com-compatible-with-a-Brinks-alarms-system .
Alternatively, you could use Callcentric or another service to call into GV. If that's too pricey, perhaps Localphone via iNum would work ($0.005/min.)
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