Connection Admission Control

Via: Wikipedia: http://en.wikipedia.org/wiki/Connection_Admission_Control

Connection admission control is an admission control in ATM networks. It is defined as ‘the set of actions taken by the network during the call set-up phase (or during the call renegotiation phase) to establish whether a VC/VP connection can be accepted’ [2][3].

In principle, in a connection-oriented network, the role of CAC is to decide whether there are sufficient free resources on the requested link to allow a new connection [4]. A connection can only be accepted if sufficient resources are available to establish the connection end-to-end with its required QoS. The agreed QoS of existing connections in the network must not be affected by the new connection [2].

If the network has the required resources, the CAC may allow a connection request to proceed; if not, the CAC will indicate this and notify the originator of the request that the request has been refused [4].

Via: 赛迪网

中文译名: 连接接纳控制

解释: 异步转移模式（ATM）技术的一种流量控制标准。在开始建立连接时分配网络资源，判断是否可以满足连接申请的各种要求并达成某种协约。用户也可以根据连接接纳控制（CAC）期间达成的协约中分析网络的拥塞情况。