[asterisk-users] SIP devices with packet loss tolerance

[Michael Graves]

On Tue, 24 Apr 2007 03:19:49 +0100, Chris Bagnall wrote:

>I'd hoped that by insisting the users test call quality with their computers turned off that I'd been able to eliminate this factor. You're right of course - if there's heavy net usage going on, call >>quality will plummet, but it shouldn't be an issue without other net usage, unless I'm mistaken?

Not even heavy usage. Any usage with no QoS will likely kill call
quality. This because clicking on even one link while on a call can
swamp the pipe to the ISP momentarily.

>>but having a router
>> capable of QoS at each location is an absolute necessity. I prefer m0n0wall on a
>> Soekris Net4501.
>
>Generally we use a similar setup (though with pfSense) when we're doing small-scale remote offices with 2-4 employees. The net4801/pfSense combo works very well in that environment.
>
>Unfortunately I can't really mandate a mini-asterisk server and Soekris box for each remote user - it'd add many hundreds of pounds to the cost :-)

OK. So provide a customer side access device that includes QoS
management. There are some Linksys routers with built-in ATA ports that
would do what you need. They ensure that call quality is sustained by
managing bandwidth/QoS in the router. If the router is also the SIP ATA
then you're in good shape for minimum cost.

Michael

--
Michael Graves                           mgraves at pixelpower.com
Sr. Product Specialist                          www.pixelpower.com
Pixel Power Inc.                                 mgraves at mstvp.com

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