Represents an individual table entry in mgcProtocolTable.

mgcNumber references the media gateway controller, constituting a foreign key into mgcTable and adapting the value of mgcNumber of that MGC.

mgProtocolNumber references the protocol, reflecting the mgProtocolNumber from the mgSupportedProtocolTable.

When active, it is expected that mgcNumber and mgcProtocolNumber contain valid values that maintain referential integrity, i.e. constitute valid foreign keys into mgcTable and mgSupportedProtocolTable respectively. The attempt to create a row that would violate referential integrity shall be rejected.

With support for multiple MGC redundancy groups, the protocols will be defined per MGC redundancy group rather than per MGC.