[Asterisk-Users] Re: T.38 fax summary

Jon Gabrielson jon at directfreight.com
Mon Feb 28 08:15:43 MST 2005


So are you saying that in my setup where I have a
adit 600 channel bank with FXO/FXS connected to a t110p,
that asterisk does an analog bridge?  Presumably that
would mean 56k modems, etc.. would also work fine.
I was under the impression that asterisk used iax2 for the
internal trunk.


Jon.

On Monday 28 February 2005 08:10 am, Noah Miller wrote:
> >> 1) Get a 4-port TDM card and install it into your Asterisk box.
> >> Connect the TDM ports to your modem ports.  Then forward incoming
> >> calls on fax DIDs to those TDM ports.
> >
> > Digium TDM 4 fxs is not really a good choice for a faxing system. I've
> > tested it for a while.
> > You should read old messages here about it.
>
> Faxes coming in from PSTN DID's going directly to a TDM card is a very
> good and reliable solution.  In this setup the fax call can be directly
> bridged from the PSTN to your fax machine with no codecs or lossy
> compression, etc.  This is exactly the solution I've been using for two
> production fax setups, and they have worked under heavy usage without
> any issues since I put them in (about 3 months).
>
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