John Foster writes:
Then what can be the way to get accounting of all
calls at
originating domain's ser? As if client removes outbound proxy from
his IP Phone conf, and the carrier(ser operator) wants to account
that user for those calls.
with sip and enum voip becomes a peer-to-peer internet service among
many other such services. if a user subscribed to open internet
service, there is no way anyone could account for the calls made by
that user and it would be a big mistake to turn open internet into a
new kind of closed phone network.
-- juha