MPSR P3S is a brand new switch matrix for System 12 Exchange of Alcatel, which is used to replace the aged Digital Switch Network (DSN).

• MPSR P3S是我公司(上海贝尔阿尔卡特)为提高System 12交换机的容量以及增加业务类型而推出的全新的交换矩阵,它取代了传统S12交换机的电路交换网络(DSN)。