In order to improve the quality of service for hand off calls, a higher accesspriority must be assigned to them.
为了保证切换质量，简单有效的方法就是提高切换呼叫的接入优先级。
2
Queueing delays can be managed using user priority. Access delays can be managed using user priority in media access methods that support more than one accesspriority.
Can also functions as bus accesspriority and arbitration. Several single chip microcomputers can be connected to can bus through can controller to form a multi-master area controller network.