因此，小灵通基站也可与综合业务网系统相匹配并且经常作为综合业务网电话的交换设备。譬如，电子交换机。
Thus a base station of PHS is compatible with ISDN and is often connected directly to ISDN telephone exchange equipment e.g. a digital switch.
本课题的研究目的是设计一种MSTP网络方案，可以实现本地业务的综合接入，能够在城域网中与其它设备交换业务数据。
The purpose of the project is to design a MSTP network scheme and to realise the composite accessing to local services and to exchange service data with other equipment in MAN.
业务网络层：业务网络采用成熟的以太网交换机冗余技术，比如堆叠或者主备模式。
Service network layer: the service network USES the mature Ethernet switch redundancy technology, such as the stack or main standby mode.
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