客户端每分钟就会与服务器进行若干次同步，上传通话记录，位置，时间和其他信息。
The client would sync with the server several times per minute, updating the system with call history, location, time, and other information.
在实际中，大多数的情况下连接通话两端的线缆都是相同的，不管使用什么网络来拨打。
In practice, most of the cable between the two endpoints will be the same, irrespective of which logical network places the call.
区别在于通话是端到端加密编码的，通过被称为SCIP (secure communications interoperability protocol，安全交互通讯协议)的特殊形式。
The difference is that the conversations are scrambled from end to end, using a special form of encryption called SCIP (secure communications interoperability protocol).
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