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随着宽带ISDN深入家庭,人们对广播业务的要求不断增加。在市内交换系统中,出局用户线数比入局中断线数多,因此必须要求采用非对称广播ATM交换网络来提供这种业务。然
As broadband ISDN goes deep into the home, there is a growing demand for broadcast services. In a municipal switching system, the number of outgoing subscriber lines is greater than the number of incoming interrupt lines and therefore asymmetric broadcast ATM switching networks must be required to provide this service. Of course