To check SQL replication, you have to log into the server, and open up SQL 2000 Enterprise Manager. Expand the tree next to the name of your publisher CCM, and see if there's a red X or something like that on Replication Monitor. If there is, your SQL replication is broken within the cluster.
To check to see if your services (TFTP) are running, go to CCMAdmin pages -- Application -- CallManager Serviceability. Then go to Tools -- Control Center -- and select the IP address of your publisher CCM, and check to see if the TFTP service is running.
TMH