[asterisk-users] Digium B410P or Sangoma A502D?

[Steve Totaro]

The Sangoma kernel drivers are different than Zaptel, while running
the install script you are asked if you would like to generate the
Zaptel configs but it is not required, you must also run wancfg to
configure the cards beyond the Zaptel configs.  The Sangoma drivers
kind of run on top of the Zaptel.

It seems that the newest wanpipe drivers and Zaptel 1.4 work without
the D chan patch which is very nice IMO, I hate patches.  I have run
the BRIStuff install and it has tons of patches!  Kind of scary but it
works for it's purpose.

I have only done BRI once but there was absolutely no echo by simply
setting echocancel=yes, echocancelwhenbridged=no.

I hear "might as well get the hardware EC board" quite a bit, but on
all the many dozens of PRIs I have installed, software EC has been
adequate (if needed at all).  It would have meant quite a bit of
wasted money that was better spent on a nice 48 port gigabit switch.

I have tested both ways (hardware vs. software), no difference really
(Sangoma).  Sangoma actually sent me one of each before purchasing
seven quad cards to test if hardware EC was going to be required for
one deployment.  I returned the hardware EC card and ordered seven
quad PRI cards.

Maybe I am just lucky or have not had enough exposure to BRI but ISDN
is ISDN, right (it really is a question, I don't know)?  Now on
analog, that is a horse of a different color, also the  phone on
either side, but especially your side can be the culprit (older
Grandstream for one) Polycom seems to eliminate much of this.

Thanks,
Steve Totaro

On Thu, Apr 24, 2008 at 7:50 PM, Matt Watson <mwatson at becon.org> wrote:
> I haven;t used any BRI cards but... call me crazy but wouldn;t they still be using Zaptel (even your sangoma... the script might just be configuring it for you)...
>
>  and btw, software echo cancel happens in the zaptel kernel driver... it has nothing to do with the hardware (hence why its a software echo cancel)....
>
>  You also would of had the option of buying HPEC licenses for software echo cancel from digium for a rather cheap price.
>
>  --
>  Matt
>  ________________________________________
>  From: asterisk-users-bounces at lists.digium.com [asterisk-users-bounces at lists.digium.com] On Behalf Of Andres [andres at telesip.net]
>  Sent: Thursday, April 24, 2008 5:04 PM
>  To: Asterisk Users Mailing List - Non-Commercial Discussion
>  Subject: Re: [asterisk-users] Digium B410P or Sangoma A502D?
>
>
>
>  We have tested both and they work fine.  The Sangoma is much easier to
>  install as it does not depend on any other driver, you just run
>  'setup-sangoma' and follow the instructions.  You don't have to fiddle
>  with the linux kernel or  zaptel or chan_misdn.  It just works.  Plus
>  its more modular.  You can chose 2/4/6 ports to buy and if you need more
>  just add remoras up to 24 ports.  The Digium card is fixed to 4 ports,
>  period.
>
>  Having said that, make sure you stick with the version that has hardware
>  echo cancel and not even try the other one.  We made the mistake of
>  buying the first time without echo cancel expecting to test the
>  'software echo cancel'.  But there is no such thing as 'software echo
>  cancel' on this card.  I do not even understand why Sangoma would make a
>  version without the hardware echo cancel.  You get some degree of echo
>  on practically every call.
>
>  Andres.
>
>
>
>  Patrick wrote:
>
>  >Hi,
>  >
>  >I need to setup an Asterisk box with 4x ISDN BRI links. Looking at the
>  >specs of various cards I favor the Digium B410P and Sangoma A502D
>  >because of hardware echo cancellation. Does anyone have any experience
>  >with either card, good or bad? Which one would you choose and why?
>  >
>  >Thanks for your insight.
>  >
>  >Regards,
>  >Patrick
>  >
>  >
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