[Asterisk-Users] Best echo-free and trouble-free system?

[Ryan Thrash]

We too experience echo occasionally, and we're on a PRI, too. We've got 
echocancel and echotraining set to on.

Any pointers here?

Thanks,
Ryan

On Apr 28, 2004, at 12:18 PM, Barton Hodges wrote:

>
> We currently have a 15-phone system using Asterisk, a combination of
> analog phones/Grandstream HandyTone-286 and Grandstream BT101s, and 4
> X100Ps connected to analog lines.  The system works well except for
> the occasional echo problem.  I have all the echo parameters
> configured, removed all the extra incoming analog lines except to the
> PBX, etc. following all the advice on the wiki and on the mailing
> list.  I'm not positive if the echo is due to the analog lines, the
> X100Ps, or the SIP devices.
>
> A customer has expressed their interest in purchasing a system with 10
> phones and 4 incoming lines.  I do not feel comfortable duplicating
> the system that we are using.  We are willing to put up with a little
> echo now and then, but the customer should have every right to expect
> a flawless system without echo, especially if they're replacing an
> existing proprietary PBX without an echo problem.
>
> What is the best setup for ensuring an echo-free and trouble-free
> system?
>
> Digital lines instead of analog?
> Analog phones connected to TDM400P cards instead of SIP devices?
> Analog phones connected to a channel bank that is connected to a
> T100P?
> Expensive Cisco SIP phones instead of Grandstream HandyTone ATAs?
>
>
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