Beijing University of Posts and Telecommunications and Soft Switch stresses, pdf format, it is true that we used to study the common

Packet : 37724088softswitching2.rar filelist
第十讲 软交换协议.ppt
第八讲 软交换呼叫控制（二）.pdf
第九讲 软交换互通技术.pdf
第六讲 软交换的基本原理.pdf
第七讲 软交换呼叫控制（一）.pdf

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