Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Alarm system and VoIP

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • #29627 Reply


    I have hooked-up my new VoIP gateway from Comwave.Net. I am trying to understand what is hapenning here.

    Videotron High Speed Internet (5.1Mbps)
    D-Link Router (DI-604)
    Comwave iPhone gateway (D-Link DG-102S)
    g.711 codec
    DSC Power832 alarm panel
    SIA format dialing, using DTMF

    I am not able to get my ADT alarm system to communicate with the ADT host.

    When dialing the 1-866-xxx-xxxx ADT Host phone number with a regular POTS line, I can hear a long dial-tone (handshake?) from the host. If I dial the same phone number with the VoIP iPhone, the host dial-tone is extremely short. So, when my alarm is trying to contact the host via the VoIP line, it never completes the handshake because, I guess, the first host signal is too short. I even listened to the line while the alarm panel is dialing out: it dials, the host picks-up, hear a short dial-tone, then nothing. If I connect the panel to the POTS line once again, it works like it’s suppose to.

    Why would the host handshake dial-tone be shorter with my VoIP line?

    Thanks a lot for your help!

    #29628 Reply

    voip and modems do not mix at all. You are lucky if you could get a fax to operate over VOIP.

    Modems: will depend on the provider that you use and the speed that you are trying, but I will bet 100 to 1 that It will not work.

    Sorry for the news.

Viewing 2 posts - 1 through 2 (of 2 total)
Reply To: Alarm system and VoIP
Your information:

<a href="" title="" rel="" target=""> <blockquote cite=""> <code> <pre class=""> <em> <strong> <del datetime="" cite=""> <ins datetime="" cite=""> <ul> <ol start=""> <li> <img src="" border="" alt="" height="" width="">