There are several security leaks in signaling system 7 (SS7) networks for the lack of security mechanism.
七号信令网络由于缺乏安全机制而存在诸多安全漏洞。
Signaling System 7 (SS7) is a protocol that provides an internationally standardized, general-purpose signaling system.
信令系统 7 （SS7） 是一个协议，该协议可以提供国际标准化的、一般用途的 信令系统。
Based on these excellences, user bring out network supporting Signaling System 7, achieving integrated multiplex equipment connecting PSTN and so on.
基于七号信令的上述优点，用户提出采用此信令实现综合复分接设备接入公众电话网等支持七号信令的网络。
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