one-to-many messaging

[Roland Perry]

In article <031d01c89e33$5b4cce20$1601010a@neos.tv>, Tom Thomson 
<cmt@btinternet.com> writes
>Even in cases where the port number does determine a machine, it is
>extremely unusual for the provider of the public telecommunications
>system to need to look at it

You don't believe the rumours that some ISPs attempt to restrict the 
passage of VoIP and P2P? [I agree that I assume the simplistic methods 
of doing that rely upon port number].
-- 
Roland Perry