We have an internal office communicator that we use for internal IM. We would like to be able to IM a company that we do business with that also use office communicator server for IM. We are not interested in connecting to AOL or Yahoo for IM. We are only planning on using OCS to OCS IM communication on different domains/companies
This far I understand that we need
1. Get a public certificate
2. set up a new Office Communicator Edge server
3. On public side do the port mappings and DNS changes inbound and outbound
4. configure servers and users to support federation
what am I missing or need?