[Freeswitch-users] FreeSWITCH and ISDN

Moises Silva moises.silva at gmail.com
Fri Aug 24 01:51:59 MSD 2012

On Thu, Aug 23, 2012 at 12:04 PM, Michael Collins <msc at freeswitch.org>wrote:

> Nowadays the whole Digium vs. Sangoma thing has boiled down to preference
> more than anything else. They are both pretty reliable (I've used both) so
> I wouldn't use that metric as a tie-breaker. If money is the ultimate
> deciding factor then a Digium clone is probably the cheapest. However, if
> you want to support the company who has supported the FreeSWITCH community
> the most then it's hands down Sangoma. Also, we know all the Sangoma guys
> personally (Hi Moy!) and they have produced the bulk of mod_freetdm. Buying
> Sangoma is a great way to support FreeSWITCH.
Just to complement Michael's accurate description of the situation (Hi
Michael!) ...

There is a few other differences, such as the fact that if you ever need
SS7, there is no SS7 stack into FreeSWITCH for Digium boards, just for
Sangoma (due to SS7 stack restrictions).

For ISDN, although I know a few people using libpri in FreeTDM, the Sangoma
SS7 stack in FreeSWITCH (ftmod_sangoma_isdn) it is the one more actively
developed and under continuous improvement and professionally supported
(not just community support). If you go with Digium cards you have to stick
with the libpri module pretty much and the community support.

All in all, my guess (although probably biased) is that most FreeSWITCH
users use Sangoma cards and therefore if you run into issues you are more
likely to get help (either via community or via Sangoma support) if you use
a Sangoma card.


*Moises Silva
**Manager, Software Engineering***

msilva at sangoma.com

Sangoma Technologies

100 Renfrew Drive, Suite 100, Markham, ON L3R 9R6 Canada

t.   +1 800 388 2475 (N. America)

t.   +1 905 474 1990 x128

f.   +1 905 474 9223


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