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

[Markus Lindenberg]

Hi Bob,

can't comment on FreeTDM, but before using a whole Asterisk box as media
gateway, maybe it is possible to use a dedicated media gateway appliance.
We've stopped using TDM cards altogether and use Patton Smartnode MGWs
where possible, it's just much easier to
integrate/replace/upgrade/downgrade/backup. No drivers and hardware
dependencies needed on the PBX host(s) and it works perfect with FreeSWITCH
and Asterisk. The Manual says it can do rbs with loop-start as exchange or
subscriber. I don't know if that fits your requirement, we use E1/q921/DSS1
here in Germany.

Also, I don't want to sound like an advertisement, but we're just that
happy with having switched from TDM cards to MGWs. :)

Regards, Markus




On Wed, Jun 11, 2014 at 5:37 PM, Bob Hartwig <bobjects at gmail.com> 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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