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

Jorge Mendoza mendoza at tcc.com.pe
Tue Sep 8 12:40:58 CDT 2009


We have some installations with smartnode 4554, (same tail echo
cancellation) without problems so far.

Jorge Mendoza

Gaëtan Minet wrote:
> Hi
>
> Is anybody using these ?
>
> Gaetan
>
>
> Begin forwarded message:
>
>> *From: *Gaëtan Minet <gminet-ml at mcit.be <mailto: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
>> <mailto: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
>> <mailto: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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