摘要
文中设计了一种紧耦合式信令网桥,通过转发信令链路信元,实现信元截取、话务阻断等功能,并实现了通话的实时监控,在公共安全等领域实用性强。紧耦合方式设计具有低延时、低负荷、隐蔽性好等优点,设计的重点是准确处理添加、截取信元后两个方向上信元的序号映射,以及网桥两侧链路故障的同步。该网桥经现场测试表明:能够灵活地实现各种业务,且实时性非常高。
A design of tightly coupled network bridge for SS7 network is proposed.The bridge transfers signal units between the two link terminals connected to it,and the signal units could be modified,inserted and removed,thus to monitor and control calls in real time.This functionality is very important in public safety area.The tightly coupled bridge is low in delay and workload,and good in concealment.The emphases in this design include：to keep the seria number continuious and notify link failures to the other side,etc.Field tests indicate that this design could flexibly implement various services in real time.
出处
《通信技术》
2010年第5期154-155,237,共3页
Communications Technology
关键词
七号信令
信令网桥
紧耦合方式
信元序号
SS7
signaling network bridge
tightly coupled mode
signal unit sequence number
