I have had my Draytek router for nearly a week now, and have noticed that, over the last few days, my Nokia N97 is not always successful at accessing my SIP acount at PBXes.org when connected via the WiFi.

I never noticed any problems with this under my previous router, and no error is being logged on the phone. I can access other things on the Internet using the phone, and the SIP account sometimes works too, but quite often it doesn't.

If anyone can advise me how to track down this problem and/or what needs to be done to fix it, I will be very grateful.