[SIPForum-discussion] PSTN calls becomes silent

[ashish dubey]

hi!!,

It may be case of NAT, but, first thing that need to check, is echo
cancellation is there on server or not.

and band width is also responsible for that silence bcoz, i have faced such
issue many times.

Regards

Ashu

On 10/29/07, Victor Pascual Ávila <victor.pascual.avila at gmail.com> wrote:
>
> Hello,
>
> On 29/10/2007, test <test at iphonet.net> wrote:
> >  I noticed that many times (2/4 calls) where an intern PBX is, the line
> > becomes silent during the call, after 6-10 seconds. The called person
> has a
> > busy signal and the caller doesn't hear anything.
> >  Has anybody idea why?
>
> Is the extension behind a NAT? are you using any nat-traversal system?
>
> If possible, attach a ngrep trace at pbx side.
>
> Regards,
> Victor Pascual
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