发明名称 |
Portable telephone system |
摘要 |
A switching system (3) has, in addition to an ordinary accounting function, an origination-only accounting control unit 6 to monitor the number of message units used by an origination-only portable telephone (1B) identified by a terminal identification number and to deny the origination of a call by the origination-only portable telephone (1B) upon the increase of the number of used message units to a predetermined number. The origination-only accounting control unit (6) accepts the origination of a call made by the origination-only portable telephone (1B) when a prescribed input about the origination-only portable telephone (1B) is given thereto by a system operator by operating a predetermined terminal device (7) or the like after the denial of origination of a call by the origination-only portable telephone (1B).
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申请公布号 |
US6301472(B1) |
申请公布日期 |
2001.10.09 |
申请号 |
US19980194677 |
申请日期 |
1998.12.01 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NAKASU JIRO;HAYASHI HIDEKI;TSUKADA TOMOAKI;KODAKA KUNIO;ONOOKA YASUSHI;YAMAMOTO KAZUHIRO;YAMANAKA SHUNJI;MITANI YUJI |
分类号 |
H04M15/00;H04M17/00;H04W88/02;(IPC1-7):H04Q7/20;H04M15/18 |
主分类号 |
H04M15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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