发表于:2003-03-14 10:15:00
2楼
一个基于LonWorks®的门禁控制系统,它拥有节点之间的认证,此系统的生产厂商是瑞典PPD。由于不仅节点之间的通讯带有认证,并且可以把控制网络的传输信号改变为加密传输,可以认为这是世上最安全系统之一。所以,如果用户需要一个功能完善并且安全性强的的安防系统,那么PPD的TAC/TSM将是一个理想的选择。
One of LonWorks based access control system, manufactured by PPD,Sweden, owns authentication service between nodes.
The total system not only has nodes authentication service,but also message cryption.
PPD access system is one of the most high security in the world.
When you need good function and high security access control system, PPD TAC/TSM is your ideal choice.