Access Control 18
Access Control 18 : Physical security: (6) Access control system topologies: Access control System Using Serial Controllers: (4) Serial Controllers With Terminal Servers: In spite of the rapid development and increasing use of computer networks, access control manufacturers remained conservative and did not rush to introduce network-enabled products. When pressed for solutions with network connectivity, many chose the option requiring less efforts: addition of a terminal server, a device that converts serial data for transmission via LAN or WAN
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