Telephone control method using ring back tone server for private branch exchange network,申请号KR20080100000-传众专利搜索

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发明名称	Telephone control method using ring back tone server for private branch exchange network
摘要
申请公布号	KR100901194(B1)	申请公布日期	2009.06.04
申请号	KR20080100000	申请日期	2008.10.13
申请人		发明人
分类号	H04W4/16;H04W4/12	主分类号	H04W4/16
代理机构		代理人
主权项
地址

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