Call Failed Service Unavailable

charlie_bird's Avatar


01 Jun, 2018 02:12 AM

I can't place any calls, I get the message "Call Failed Service Unavailable" every time, on both Mac and iOS

  1. Support Staff 1 Posted by Dawn on 01 Jun, 2018 02:52 PM

    Dawn's Avatar

    Can you try a call today and send me a screen shot of what you receive. are they long distance calls you are attempting, local calls. WiFi or 3G can you give me a bit more information..

  2. 2 Posted by charlie_bird on 01 Jun, 2018 04:25 PM

    charlie_bird's Avatar

    I've got an area code 205 and I'm attempting to call 408.
    I've tried both WiFi and 4G on my phone (even using a personal VPN).


  3. Support Staff 3 Posted by Dawn on 01 Jun, 2018 06:09 PM

    Dawn's Avatar

    First, would you mind telling us what carrier you're using? Thanks. This thread is private, so you don't have to worry.

    As for the error message--this error appears when Whistle can't get a response from our servers. If you're on a residential network, the problem is most likely the router. We recommend disabling SIP ALG (a router setting) to fix that issue. Here's a good site on what it is and how to disable it in certain router types:

  4. 4 Posted by charlie_bird on 01 Jun, 2018 08:16 PM

    charlie_bird's Avatar

    The Wi-Fi isn't residential, but the error happens even when using a personal VPN (that routes all traffic though a residential connection with no blocking on the router).
    And on 4G, with AT&T


  5. Support Staff 5 Posted by Dawn on 04 Jun, 2018 02:39 PM

    Dawn's Avatar

    Can you attempt a call today and let me know I am getting ahold of my engineers.

  6. Dawn closed this discussion on 08 Aug, 2018 02:44 PM.

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