There are 4096 aAggConversationAdminPort[] variables, aAggConversationAdminLink[0] through aAggConversationAdminLink[4095], indexed by Port Conversation ID. Each contains administrative values of the link selection priority list for the referenced Port Conversation ID. This selection priority list is a sequence of Link-Number IDs for each Port Conversation ID, in the order of preference, highest to lowest, for the corresponding link to carry that Port Conversation ID. A 16-bit zero value is used to indicate that no link is assigned to carry the associated Port Conversation ID. NOTE - This mapping of Port Conversation IDs to Link Number IDs is the fundamental administrative input. An equivalent mapping of Port Conversation IDs to Port IDs [Conversation_PortList[]] is derived from this and used internally. NOTE - When a network administrator issues a command for selection rules, provided by aAggConversationAdminLink[], the ChangeActorOperDist is set as specified in 6.6.2.2.