030612
Multi party calls work.
Release handling may be different from the real SSF, and perhaps this needs to be fixed. The current implementation forwards release messages between legs 1 and 2. In a real SSF, perhaps this should not be done for a follow-on call (i.e. when leg 2 is not the first leg 2 in a call). For NRG this should be ok, since they do not seem to use follow-on calls. Especially in the case of multi-party, there will not be a leg 2.
For ReleasePartyConnection (not yet implemented...), the release should not be forwarded to the other legs. This may leave a single leg in the call.