adam@thebowery.co.uk wrote:
You may find that playing around with a packet sniffer (tcpdump) and seeing which way packets on the network go to which machine etc. may provide you with some clues. I would suspect that the problem is a firewall on one of the machines, although not knowing how this software works it is hard for me to say which one :) Are there any logs for the firewalls that you could look at?
If tcpdump looks like it is a bit heavy to interpret you may find that using ethereal as a front end may help you http://www.ethereal.com/ trouble is that I can't really give you a quick and dirty guide as to how they work, you will have to give them a go yourself.
I have temporarily swapped my ADSL for a modem which, of course, bypasses the router and firewall. This has made no difference in that I still cannot instigate a call so I think that the problem is probably not within my own computer.
That, at least, is a small step forward.
Barry Samuels http://www.beenthere-donethat.org.uk The Unofficial Guide to Great Britain