[VoIP] Zaptel patch

[John Novack]

Max Park - somewhere upstate NY?

CC to Max

Donald Froula wrote:
> Does anyone on the list know who authored the zaptel.c
> patch to allow call progress to be heard? He is only
> identified as "Max" on the FAQ page.
>
> I have a few questions about how the patch works. It
> seems to play around with SF signalling and the SF
> notch filter. I'd like some help determining how to
> make it work with ProjectMF.
>
> I believe the only part of the patch that affects
> Zaptel muting is commenting out the following block of
> code:
>
> #if 0
>
>      if (ms->dialing) ms->afterdialingtimer = 50;
>         else if (ms->afterdialingtimer)
> ms->afterdialingtimer--;
>         if (ms->afterdialingtimer && (!(ms->flags &
> ZT_FLAG_PSEUDO))) {
>                 /* Be careful since memset is likely a
> macro */
>                 rxb[0] = ZT_LIN2X(0, ms);
>                 memset(&rxb[1], rxb[0], ZT_CHUNKSIZE -
> 1);  /* receive as silence if dialing */
>         }
>
> #endif
>
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> Project Web Page: http://www.ckts.info/
>
>   

-- 
Dog is my co-pilot