发明名称 |
Anropsomdirigeringssystem |
摘要 |
An interface ( 52 ) is provided between a satellite telephone system ( 4 ) and a cellular telephone system ( 5 ) for allowing calls to a user's cellular telephone to be diverted to a satellite telephone ( 25 ) when the user is unable to use his cellular telephone, for example when on board an aeroplane ( 2 ) fitted with a satellite telephone system ( 20 ). The user inserts a card (which may be the SIM of his mobile phone, or a card compatible with existing satellite telephone equipment) into a suitable reader in the satellite telephone ( 20 ), which causes the satellite ground station's card verification system ( 42 ) to connect to a host cellular network ( 50 ). The host cellular network has an interface unit ( 52 ) which emulates the operation of a normal base station, so that the host cellular system ( 50 ) acts as if the mobile user's terminal is roaming on the host network, but is currently "busy". The interface ( 52 ) also resets the user's existing call diversion instructions so that when the host cellular system ( 5 ) receives a busy tone frome the base station emulator ( 52 ), it routes calls to the directory number of the terminal ( 20 ). |
申请公布号 |
NO20021221(A) |
申请公布日期 |
2002.05.08 |
申请号 |
NO20020001221 |
申请日期 |
2002.03.12 |
申请人 |
STRATOS GLOBAL LTD |
发明人 |
ALLAWAY, ANDREW WAYNE;USHER, MARTIN PHILIP;MCLAREN, DONNA;MEAD, ANDREW ROBERT;TISDELL, ELIZABETH CLARE |
分类号 |
H04M3/00;H04B7/185;H04B7/26;H04W4/16;H04W84/00;H04W84/02;H04W84/06 |
主分类号 |
H04M3/00 |
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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