Thanks Steve, it was helpful to read your post. Neither Digium or
Sangoma single span cards have built in E/C, I´m wrong? To get one with
this feature enable is completely out of my budget; since it is no for
commercial use. I hope I wont have echo problems or they can be solve by
means of software parameters.
Thanks a lot.
R.R. Libera
Steve Davies escribió:
On 10/20/06, R.R. Libera <[EMAIL PROTECTED]> wrote:
Wow, this is a completely neutral and very valuable review. Thanks a lot
Zoa.
I´m an * newbie; my little box will only needs 20 extensions to give
termination to remote users and I´m about to buy a PRI interface; I
decide to get Sangoma hardware.. a lot of people recommended it to me.
In you review you said: "The biggest choice you need to make is if you
want onboard echo cancellation or not". How can I really know if I will
need echo cancellation? I´m planning to get a single span card (which
doesn´t include echo cancellation) but how can I know if I really need
this feature??
(Hopefully this does not oversimplify)
Fundamentally, since Digium updated the Hardware E/C on their recent
boards, there is little difference between the PRI-side electronics of
the Sangoma or the Digium cards (at least, not which would worry the
end user)
The remaining H/W difference is the PCI interface hardware. Sangoma
have far more hardware development resource, to their PCI and now
their PCI-e interfaces are more compatible with variations in
motherboards.
Digium are a software company, so the software support for their cards
will be easier to get going as it is "built in" - On the other hand,
Sangoma's build environment has come a long way, and their support IS
good.
As far as "do I need echo cancellation" is concerned. I would say that
if you can afford it, and it is available, then buy it. It generally
saves a lot of heartache in the longrun, regardless of the
manufacturer. As you say, the Sangoma single-port cards do not have
EC, so that decides the issue :)
When using software EC, the MG2 echo canceller in the 1.2.x release is
good. We have almost no problems on PRI circuits. I am not as
confident of the 1.4.x version of the EC, but time will tell I
imagine.
Hope that helps.
Steve
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