[asterisk-users] Echo on Sangoma A400 and background noise

[Tim Nelson]

----- "Al lists" <asteriskal at gmail.com> wrote: 
> I'm a long time user of Digium carts and stupid me i wanted to give Sangoma a try. 
> We got Sangoma A400 with 6 FXO ports. 
> 
> Asterisk version: 1.4.35 
> Zaptel version: 1.4.11 
> Wanpipe version: 3.5.11 
> 
> we tried to use fxtune but looks like it wont work with Sangoma card, ( please correct me if i'm wrong) 
> Echo is really bad and also we have background noise on all lines. 
> We tried both mg2 and oslec echo canceler. 
> was wondering if you have any experiense with that because Sangoma tech support is not helpfull, just look at their response: 
> 
> "As you mentioned you have tried Oslec algorithms for echo cancellation.Which 
> is a good way to solve echo cancellation issues. If that is not woking for 
> you you may want to upgrade to hardware echo cancellation......with cards 
> which have echo cancellers. 
> 


I've had the exact opposite experience you've had. Digium tech support was less than stellar whereas Sangoma has always been top-notch. 


Also, their cards with HWEC 'just work' with absolutely no tuning required. 

--Tim 
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