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发明名称
Roaming authorization system
摘要
申请公布号
EP0788287(A3)
申请公布日期
1999.07.21
申请号
EP19970101730
申请日期
1997.02.04
申请人
AT&T CORP.
发明人
AMIN, UMESH J.;REDDEN, MICHAEL
分类号
H04W48/04;(IPC1-7):H04Q7/38;H04Q7/22
主分类号
H04W48/04
代理机构
代理人
主权项
地址
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