[Freeswitch-users] Is there an exmple of "backup provider" ?

Pierre Couderc pierre at couderc.eu
Wed May 30 20:25:17 UTC 2018

On 05/30/2018 04:20 PM, Avi Marcus wrote:
> Beware that "low cost provider" may not just reject the call, which 
> you can recover from, but can mess you up in a large number of ways. 
> Some of which you can try to work around (debugging + time), some of 
> which you may not be able to figure out.
>   * Not properly passing along DTMF
>   * very long PDD
>   * FAS fake answers
>   * Returning "USER_BUSY" when it's not actually busy
>   * Returning "NORMAL_TEMPORARY_FAILURE" when it's actually busy
>   * poor audio quality
>   * Issues with proxies/re-invite/switching codecs, etc.
>   * .. and I'm sure many more.
> ... Just some of the many issues I've run into when using multiple 
> carriers and terminating to countries around the world.
Thank you very much.
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