[asterisk-users] Fwd: Patton smartnode 463x (BRI) 25ms tail echo cancellation

[Gaëtan Minet]

Hi

Is anybody using these ?

Gaetan


Begin forwarded message:

> From: Gaëtan Minet <gminet-ml at mcit.be>
> Date: Sat 22 Aug 2009 16:29:42 GMT+02:00
> To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com 
> >
> Subject: [asterisk-users] Patton smartnode 463x (BRI) 25ms tail echo  
> cancellation
> Reply-To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com 
> >
>
> Hi all
>
> We use pci/pci-e BRI cards in our installations. Due to echo problems
> (that was before Oslec and others), we quickly switched to cards with
> hardware-based EC.
> So we use exclusively Digium B410p cards that provide 64ms tail EC.
>
> For several reasons we'd like to switch to external BRI gateways like
> the Patton smartnodes (the price is getting really close to a B410p).
>
> I'm however curious about their HW EC. I see in the datasheets that it
> only has 25ms tail per channel (pri are 128ms, but not BRI).
> Are some of you using these gateway and do your experience (many)
> echo problems on calls ?
>
> Our other alternative is to use sangoma cards that have 128ms HW EC
> and seem more stable overall, but it is yet a bit more expensive.
>
> Thanks for your feedback.
>
> Regards,
> Gaetan
>
>
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