The blacklist represents itself a list or register of entities which are denied privileges, service, mobility, access and admission due to these or other reasons. This function blocks all connections from the subscribers who are in the list.
Allows the calling subscriber automatically finding available (for example, “not busy”) agents from the telephone group. Every extension will be checked until the “free” extension is not reached. The extension will be omitted if the agents are on the telephone or have set their extension as “blocked”.