This table contains current registration status information
for all the ports, listed in cvcPortTable, that are associated
with the call agents listed cvcCallAgentTable.
The network management subsystem adds a conceptual row to this
table per port and its associated call agent pair. Entries in
this table depends on entries in cvcPortTable and
cvcCallAgentTable.
Deletion of any entry in those other two table will result in
deletion of corresponding entry in this table.