On Tue, Feb 10, 2009 at 1:52 AM, Olivier <[email protected]> wrote:
> Have you tried to directly connect two T.38 enabled gateways without
> involving Asterisk at all (like this) ?
> <ISDN> --- Gateway --- <SIP/T.38> --- ATA --- <FXO/FXS> --- fax machine

No. As long as you can sufficiently debug that arrangement, I don't
see any problems. As you have risk of corrupting the fax timing at
each step, the fewer moving parts in that chain the better.

However, I have done:

<channelized DS3> --- <Adtran T1 gateway> --- <SIP/T.38 gateway> ---
<Asterisk 1.6 as SIP fax machine>

and I was able to send / receive faxes wonderfully

I verified this against

<T1> --- <proprietary PBX> --- <FXO/FXS> --- <fax machine(s)>

both sending and receiving to / from the software fax in Asterisk.

So I had 'real' traditional phones world in-between these two
arrangements for testing purposes.

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