In article <1167304345.197696.92850@a3g2000cwd.googlegroups.c om>,
Kabads <kabads@gmail.com> wrote:
>I've never managed to get voip.co.uk working properly and my contract
>is up for renewal in February (IIRC) and I would like to get it working
>reliably before February to renew.
>
>I'm currently experiencing dropped and poor call quality, which I think
>is due to improper config of QoS on my DSL router. My set-up is
>represented thus:
>
>ADSL --> router --> voip MTA (supplied by voip.co.uk) --> DECT phone
> |--> wireless router --> wireless laptops
> |--> PC

Have you gone back to basics to work out if you really do need
QoS? ie. unplug everything from your router except the MTA and make some
calls... Of-course if you're constantly down/up loading from the other
PCs then you might well need it, but I've found that in-general QoS isn't
needed in a typical home environment, but if you have it, then enable it.

Another thing to remember is that QoS is only really effective in one
direction - ie. data leaving your network to go out to the big-bad
internet. You have very little control over data coming in (because the
data has already come in and by then it's too late to do anything with it,
so it might as well just pass it throught to the much higher speed LAN)

>I understand that voip.co.uk recommend that all machines should connect
>from the MTA, but as there is only one network port, I'd rather use the
>4 on my router. Also, I'm sure this can be done as my router allows for
>QoS.
>
>As stated, my router allows for QoS configuration, but I've yet to
>manage to configure it happily with my MTA. The MTA is set to receive a
>fixed IP from the router (192.168.1.5) with the router on 192.168.1.1.
>
>I've set up a router LAN QoS rules for the traffic between 192.168.1.1
>and 192.168.1.5, for high priority, medium priority (with 80%, 20%) but
>nothing seems to connect nicely. The MTA also has QoS enabled, but with
>no settings. You can see the MTA QoS config screen at:
>http://www.monkeez.org/publicpics/voip/voip3.png
>
>You can see the current config that I have on my router at:
>http://www.monkeez.org/publicpics/voip/voip1.png

Ah. You're QoSing SIP. What you need to QoS is RTP, and that will depend
on the ports your MTA uses (and voip.co.uk). The default is 10000 through
20000. If you can, just QoS on the IP address and match all ports. (or
1 through 65535)

>and then the config screen where I am entering information at:
>http://www.monkeez.org/publicpics/voip/voip2.png

See if you can not enter any port numbers. Also, you want to QoS on UDP
(which is how SIP and RTP is carried), not TCP, so set that to UDP or
both if it has a both setting.

Remember: SIP just controls the call, RTP carries the data for the call.

>Basically, any advice you can offer on this last screen to get an
>optimal setting for my MTA would be gratefully received. Am I correct
>in focusing on port 5060? Are there any other ports that I should allow
>for?

Find out what ports voip.co.uk uses for RTP, or QoS on IP address only.

Gordon