VOIP Router causing PSTN interference

[congo]

I'm using a VOIP phone service as well as having a normal PSTN telephone in the kitchen area.

I get interference on the normal PSTN phone line when the SIP registration (VOIP service) is active on the Billion 7402VGP router and not under any other condition.

Here is the schematic of my installation. Anyone see any obvious wiring fault or know why the interference is happening?

It's as if the router is feeding back interference into the phone line and the normal phone picks it up.

Do I have a faulty router/VOIP device?

[ctjoyce]

I'm not too sure, however I get customers complaining all the time about their VOIP services being shady. Personally I don't think I will use it until its well tested and refined.

Cheers
Cameron

[congo]

There is nothing wrong with my voip service Cameron.

[ctjoyce]

Never mind then, as it looks like you have done all the wireing right.

Cheers
Cameron