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US 2001/0011016 A1Published application
Mobile user terminal with call diversion facility
OwnerPaul Chambersinventor
Life of this patent
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OwnerPaul Chambersinventor
Estimating the term…
In a telephone system a mobile radio telephone handset communicates via a satellite 3 and a satellite earth station 5 into a terrestrial system 7 which includes a call diversion center 39. If radio contact is lost with the handset 1, the call diversion center 39 can be telephoned using an alternative telephone 25 and the mobile radio telephone handset 1 used automatically to provide acoustic instructions to the telephone 25 and hence instruct the diversion center 39, whereby calls, directed to the handset 1, are diverted to a selectable other telephone 25. Diversion can terminate as soon as the mobile radio telephone handset 1 once again reestablishes radio contact with the satellite 3 or can be conditional, only operating if the satellite earth station 5 fails to get a call through to the handset 1.
A mobile user terminal for use in a mobile telecommunications network which includes a call diversion centre responsive to a command from another telephone to divert calls for the user terminal, the mobile user terminal being selectively operable to generate acoustic signals to be coupled through the other telephone to control operation of the call diversion centre.
A mobile user terminal according to any preceding claim including an earpiece and a control circuit operative to feed electrical signals to the earpiece so as to produce said acoustic signals.
A mobile user terminal according to any preceding claim including a telephone keypad, said control circuit being responsive to a predetermined operation of the keypad to produce the acoustic signals
A mobile user terminal according to any preceding claim wherein the acoustic signals comprise DTMF signals.
A mobile user terminal according to any preceding claim comprising a mobile telephone handset.
A mobile telecommunications network including a mobile user terminal according to any preceding claim, and the other telephone for sending commands to a call diversion centre to divert calls for the mobile user terminal.
A method of diverting a call from a telecommunications network that includes a call diversion centre, to a mobile user terminal, the method comprising:
Dependencies are inferred from the claim text.