[Freeswitch-users] Spandsp mulated modems inbound/no /dev/FS* device?

[Anita Hall]

Hi Alex

I got ptlib, opan and t38modem compile and installed. So far so good. Is
there a wiki entry you have made with details of your FS + T38modem +
Hylafax set-up, configuration files etc.

I was able to dig up some stuff from your mails in the list but some wiki
entry will help me and others a lot.

My team member has put up a Wiki entry at
http://wiki.freeswitch.org/wiki/T38modem

It will help us a lot if you could do a quick edit and copy/paste of your
config.

Many many thanks!

regards,
Anita



On Fri, May 18, 2012 at 2:45 PM, Alex Crow <acrow at integrafin.co.uk> wrote:

> On 18/05/12 09:34, Anita Hall wrote:
> > Hi Alex
> >
> > Many thanks for the reply.
> >
> > Do I need t38modem if I am already receiving the Fax calls over E1 via
> > a Sangoma Card in my FS machine ? I read on the list that Hylafax
> > takes audio and the only reason you needed t38modem was because your
> > FS was getting calls over SIP.
> >
>
> Anita,
>
> Yes, you do if you want to use Hylafax and need inbound faxing, because
> it needs a modem device. T38Modem provides that (eg /dev/ttyT38x).
>
> > This is my topology
> > ~~~~~~~~~
> > Hylafax <-------->|______| <-------> FreeSWITCH <---------> E1
>
> Pretty much the same as mine in effect.
>
> So you would need
>
> Hylafax <-------->T38Modem<-------> FreeSWITCH/t38gateway <---------> E1
>
> So hylafax speaks "Fax data" to T38modem, which speaks T38 to
> FreeSwitch, which gateways to/from audio over the E1. You may need to
> change my configs a bit to get that last bit working, maybe not.
>
>
> > ~~~~~~~~~
> >
> > Since Hylafax is already taking audio calls, may be I do not need the
> > t38modem ? If not, can Hylafax take audio calls directly from FreeSWITCH
> ?
>
> Not unless the inbuilt modem can be made to be an endpoint for calls
> from coming in from the E1, which I understand at present it cannot.
> This is because Hylafax does not send and receive audio itself, it talks
> fax control commands to modems and sends and receives data over a serial
> port.
>
> >
> > This is your topology (taken from your mails in the list)
> > ~~~~~~~~~
> >
> Hylafax<---Audio---->t38modem<---T38--->Freeswitch/t38gateway<----G.711/SIP--->Mitel
> > 3300(T38 unsupported, grr)<---ISDN30---->PSTN
> > ~~~~~~~~~
>
> Actually the Mitel does support T38 with a license. The thing I'm not
> sure about is how good its gatewaying to ISDN is.
>
> Cheers
>
> Alex
>
>
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