Mobile telephony
First Claim
1. A telephone network, comprising:
- a movable telephone network;
a fixed telephone network;
a radio link connecting said fixed and movable telephone networks;
said movable telephone network being capable of transitioning from an active state to an inactive state, and sending a control signal to said fixed network indicating that the movable telephone network has entered an inactive state; and
said fixed telephone network being capable of discontinuing forwarding calls to said movable telephone network in response to receipt of said control signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A satellite telephone system for communication between a fixed network (4) and a moveable network (1) on board a vehicle, has means for suspending operation of the moveable network, for example when the moveable network could interfere with a fixed network, during safety-critical stages of a flight, or to enforce “quiet” periods on board. When operation of the moveable network (1) is suspended a control signal is transmitted to the fixed network (4), causing the fixed network (4) to intercept calls directed to the moveable network, thereby avoiding unnecessary signal traffic over the satellite link (3, 6, 13). The moveable network may be a wireless network (FIGS. 1, 2), or a wired network (FIG. 4).
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Citations
16 Claims
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1. A telephone network, comprising:
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a movable telephone network;
a fixed telephone network;
a radio link connecting said fixed and movable telephone networks;
said movable telephone network being capable of transitioning from an active state to an inactive state, and sending a control signal to said fixed network indicating that the movable telephone network has entered an inactive state; and
said fixed telephone network being capable of discontinuing forwarding calls to said movable telephone network in response to receipt of said control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a telephone system including a movable telephone network and a fixed telephone network, said method comprising:
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proving a communication path between the movable telephone network and the fixed telephone network;
transitioning the movable telephone network from an active state to an inactive state;
sending, in response to said transitioning, a control signal from the movable telephone network to the fixed telephone network indicating that the movable telephone network is inactive;
intercepting, at the fixed telephone network, and in response to receipt of the control signal, incoming calls directed towards cellular telephones within a service area of the movable telephone network. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification