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发明名称
METHOD AND APPARATUS FOR INTERNET-BASED TELEPHONE ACCESS TO PREPAID CARD AND PIN SYSTEMS
摘要
申请公布号
EP1273164(A4)
申请公布日期
2003.07.02
申请号
EP20010922977
申请日期
2001.03.30
申请人
MCI WORLDCOM, INC.
发明人
LIU, YALI;LIU, TONG
分类号
H04M15/00;H04L12/14;H04L12/66;H04M17/00;(IPC1-7):H04M17/00;H04Q3/00;H04M7/00
主分类号
H04M15/00
代理机构
代理人
主权项
地址
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