[VoIP] zaptel.c patch author?

[Donald Froula]

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