[Freeswitch-users] FreeTDM - any good for legacy CAS T1 protocols?

[dgarcia at anew.com.ve]

Hi,

I could test time ago a digium card with an alcatel oxe using an E1 line-side. I
could not make a full set of test  like transfer or hold. Also I can not recall
if I use asterisk or freeswitch, i think I used fs but i can not be sure.

What I can tell the settings was quite stright forward. The only issue what I
got was about user persimision freetdm to run dahdi.

I think you question could be answered by Moises Silva who is the main
constributor of FreeTDM.

I found this on net, coul help you test:

http://www.marshut.com/iwxvu/freetdm-rbs-configuration-for-multi-port-cards.html


Ah Steve (maybe I do not understand your response) .... fxs and fxo in a digital
E1 is posible. Some fabricants use CAS to emulate a fxs station in each circuit,
so you can get 30 "analog" station in a E1. This protocol have presence in
several pbx (Alcatel, Nortel, Meridian, Siemens, Avaya, etc) and is used by IVR.
Just for infomation look at:

http://www.nmscommunications.com/swDocs/Docs/6709-23/ops_signaling_.html

It is a protocol very nice and simple

> On June 12, 2014 at 8:55 AM Steve Underwood <steveu at coppice.org> wrote:
>
>
> So "analog" options doesn't sound right for a T1 on Freeswitch, but
> choosing "loop start" sounds perfectly normal for Asterisk?
> Hint - they aren't digital loops you are starting.
>
> Regards,
> Steve
>
> On 06/11/2014 11:37 PM, Bob Hartwig wrote:
> > Hello all,
> >
> > I have a project coming up that will require me to interface
> > Freeswitch to some rather arcane legacy T1 protocols. Specifically
> > digital loop start, and station-side digital loop start. I'm
> > concerned that the userland support for these may be incomplete or
> > even non-existent in FreeTDM.
> >
> > I've successfully used FreeTDM to connect to PRI, but when I look for
> > span configuration options for CAS T1, the only things that I see that
> > may be applicable are described as "analog" options, and that doesn't
> > sound quite right for loop start on T1 channels (but I could be wrong
> > about that). If I were to use Asterisk for this, I would configure
> > chan_dahdi.conf for "signalling=fxs_ls" and/or "signalling=fxo_ls".
> >
> > Should I pursue using FreeTDM for this, or would I be smarter to
> > incorporate a simple Asterisk gateway to handle this legacy CAS T1
> > signaling?
> >
> > Thanks,
> > Bob
> >
> >
>
>
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