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Description: 隆重推出NO.7信令系统(SS7)之国家标准（中文）—— NO7-综合业务数字网用户部分ISUP(补充) ydn038.1-grand launch Signaling System No.7 (SS7) of the national standard (Chinese)-- nr 7-integrated business Digital Network User Part ISUP (supplementary) ydn038.1
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Author: Nick |
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