Gateway system and method for interconnecting telephone calls with a digital voice protected radio network
First Claim
1. A secure communications system for a plurality of mobile and fixed subscribers, with at least one fixed subscriber accessible on a conventional telephone via a telephone network having a telephone communication channel with a first bandwidth and signalling requirement, wherein clear analog or encrypted digital message signals are exchanged end-to-end automatically, the system integrated to comprise in combination:
- a radio communication network having a radio communication channel with a second bandwidth and signalling requirement, which second bandwidth and signalling requirement is different from said first bandwidth and signalling requirement, said radio communication network including a control console, a console interface unit, a base station, and a plurality of subscriber radios operating thereon, for exchanging clear analog or encrypted digital message signals among subscribers;
remote interface means, co-located with the fixed subscriber'"'"'s conventional telephone for alternately handling clear or encrypted message signals in a first or second mode with other predetermined subscribers; and
gateway means, coupled to said radio communication network and to the telephone network, for automatically remotely controlling the mode of said remote interface means as well as for processing said message signal compatibly with said first and second bandwidth and signalling requirements without an intervening decryption.
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Accused Products
Abstract
A Gateway apparatus and method is disclosed which permits secure, end-to-end communications to exchange automatically between predetermined authorized subscribers operating on a radio network and a telephone network. The Gateway determines whether clear or coded message signals are to be routed from one network to another without utilizing an intervening decryption and encryption to accomplish the interconnection. The Gateway includes a radio network interface, a telephone network interface, a signal processor, and a supervisory controller. A Remote Interface at the location of the predetermined telephone subscriber is utilized to adapt a conventional telephone for clear and coded modes of operation. Moreover, an alternate embodiment is disclosed which permits two radio networks to be interconnected via the telephone network by utilizing two Gateways.
123 Citations
14 Claims
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1. A secure communications system for a plurality of mobile and fixed subscribers, with at least one fixed subscriber accessible on a conventional telephone via a telephone network having a telephone communication channel with a first bandwidth and signalling requirement, wherein clear analog or encrypted digital message signals are exchanged end-to-end automatically, the system integrated to comprise in combination:
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a radio communication network having a radio communication channel with a second bandwidth and signalling requirement, which second bandwidth and signalling requirement is different from said first bandwidth and signalling requirement, said radio communication network including a control console, a console interface unit, a base station, and a plurality of subscriber radios operating thereon, for exchanging clear analog or encrypted digital message signals among subscribers; remote interface means, co-located with the fixed subscriber'"'"'s conventional telephone for alternately handling clear or encrypted message signals in a first or second mode with other predetermined subscribers; and gateway means, coupled to said radio communication network and to the telephone network, for automatically remotely controlling the mode of said remote interface means as well as for processing said message signal compatibly with said first and second bandwidth and signalling requirements without an intervening decryption. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification