Importance

Loading Importance Indicators...

Abstract

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.

Loading the Abstract Image...

First Claim