This is why I don't do this kind of work anymore. Impossible to
distinguish the phantom problems from the real ones - and I'm convinced
there ARE phantom problems when you install new telephones on people's
desks.
Suggestion: learn to use the facility in Wireshark that can log a
SIP/RTP stream and report actual latency and packet delivery stats. That
will give you some solid info on at least one aspect of call
quality.> Message: 2
> Date: Tue, 15 Dec 2009 11:03:07 -1000
> From: "Ben Schorr" <bens at rolandschorr.com>
> Subject: Re: [asterisk-users] Can't get G.729 to work...
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Message-ID:
> <02BD9BE03009B24B9BF9E00257AD8103012D7404 at
HNL-PAI-EXH001.pacificatelier.com>
>
> Content-Type: text/plain; charset="US-ASCII"
>
> Yes, the routers are another issue we're dealing with. We've
configured
> them to prioritize traffic to/from our Asterisk server but I'm not
> convinced that setting is really working as expected. So we're working
> with the vendor on that.
>
> The effective bandwidth is 6Mb/sec down x 1.4Mb/sec up (so basically
> 1.4x1.4 on the VPN). For 8 users, where rarely more than 2-3 of them
> are on the phone at any given time, that should be sufficient I think.
>
> They DO have to share the connection with their web browsing and e-mail
> and such but as best we've been able to tell they aren't saturating
> their connections - usually not more than 4-5 of the 8 are using their
> computers at any given time and most of them just do e-mail and local
> apps that shouldn't touch the Internet connection.
>
> Frankly I'm puzzled that they have these issues and the problems rarely
> seem to happen when I call them. I'll go to their site and make a few
> calls from one of their phones and it sounds perfect to me. But three
> days later all I hear is how frustrated they are because these new VOIP
> phones suck and they can "never" hear anybody and...
<sigh>
>
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