VOIP IP QOS and other fun acronyms.
August 15, 2006 5:39 AM Subscribe
Crackle and chop free VOIP - how exactly do I get IPQoS to work on my iConnect Access 621 router / D-Link DVG2001s ATA combination?
posted by Jimbob to computers & internet (8 answers total)
I've been mucking about with this for weeks now, and thought it was about time to get outside help to see if anyone can offer some advice, because it's starting to make me frustrated.
Basically, QOS on my VOIP line just doesn't seem to be working, despite both my modem-router (an iConnect Access 621) and my VOIP ATA (a D-Link DVG 2001s) claiming to support it.
Here's what I've done so far.
In the router QOS configuration, I have enabled:
On the ATA I'm not quite sure what to do. It offers two QOS modes, "TOS" and "DiffServ". I'm not sure how to set these, because documentation on the web is very hard to come by.
TOS lets you set values from 0 to 7.
Diffserv lets you set values from 0 to 63.
What's the best way to configure this? I want absolute, maximum priority given to VOIP traffic.
However, none of these settings seem to make any difference. I start a big web download, then try to make a VOIP call, and it is choppy as hell - I'm only hearing about 25% of the audio.
In the router, I've even tried setting QOS by IP address, giving my phone "HIGH" priority on all ports, to all outside address, and giving my desktop and laptop "LOW" priority.
But this doesn't seem to make a difference though, either. Am I missing somthing? Is anyone else using this combination of router and VOIP ATA with success?