[BudgeTone 101] Stops ringing?

Discussion in 'VOIP' started by Vincent Delporte, Oct 3, 2006.

  1. Hello

    When that IP phone is located on the same network as the Axon PBX
    server (a free Windows program), it works just fine, but when it's
    located on a remote network on the Net, it will often stop ringing. In
    the setup I need to use, the BT is connected to one of those modem +
    hub ADSL modems. Typically, it will resume ringing after I reboot the

    FWIW, there's no firewall involved on the phone side (ie. the BT is
    located on a hub that is in the public part of the network; the PBX,
    OTOH, is located in a private network protected by a NAT firewall),
    and I upgraded the BT to, but that didn't solve the issue. It
    seems to occur after I made some calls to another SIP device (X-Lite

    Has anyone seen this?

    Thank you.
    Vincent Delporte, Oct 3, 2006
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  2. You might try playing with registration expiry setting(s).
    Jonathan Roberts, Oct 4, 2006
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  3. I was thinking of something like that, and I'll see if that solves the
    issue, but it can happen just seconds after I received a call
    successfully. I wonder if it's not something in the modem.
    Vincent Delporte, Oct 4, 2006
  4. OK, I tried this, it does improve things, but after a few calls, the
    BT no longers answers incoming calls, and the caller gets a "Call
    failed: Temporarily unavailable". The problem is... temporarily solved
    by waiting a bit or using the BT to call someone.

    I changed Register Expiration from 3600 to 20, then tried changing
    keep-alive interval from 20 to 5 (but when relogging to the web
    interface, this value is put back to 20: Is 5 too low and not

    Has anyone seen this? Looks like the modem/hub would close all ports
    for a while (UDP 5060 in this case).
    Vincent Delporte, Oct 4, 2006
  5. When this happens, does the server show a connection to the device any
    longer? I know how to check this under Asterisk but haven't a clue in

    Jonathan Roberts, Oct 5, 2006
  6. I'll see if I can gather data from the Axon PBX and the X-Lite
    softphone that I use to call the BT phone, but regarless, when setting
    up a call, is the PBX involved at all?

    I though it would just hand out the IP and port of the remote device,
    and then get out of the loop, ie. the softphone will dial the IP +
    port of the BT phone directly.

    I ordered an el cheapo USB IP phone. If I can solve the BT issue, I'll
    see if a USB phone works better.
    Vincent Delporte, Oct 5, 2006
  7. Good question. To be honest, under Axon, I don't have a clue. I was
    assuming the devices were registering with the server. Regardless of the
    transport between the two endpoints, I would think you would still see a
    connection. When have this problem, I am wondering if it is completely
    losing its registration. I'm tired, so this may not make perfect sense...
    Jonathan Roberts, Oct 6, 2006
  8. I'll keep reading on VoIP but I was under the impression that VoIP
    devices only query the PBX to get the remote VoIP device's IP and
    port, and from there on, the two devices talk to each other... but I
    may be wrong.

    Anyhow... turns out that the four Ethernet ports that make up the
    switch part on that modem can only be used reliably once the thingie
    has been reconfigured to work as a router. The fact that the BT phone
    would ring every so often was just luck, apparently.

    Thanks a lot for your help :)
    Vincent Delporte, Oct 6, 2006
  9. Wow, strange :>
    You're most welcome!
    Jonathan Roberts, Oct 7, 2006
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