Gateway system and method for interconnecting telephone calls wi

Details Gateway system and method for interconnecting telephone calls wi Gateway system and method for interconnecting telephone calls wi

1986-07-03

1989-03-21

Cangialosi, Salvatore

Cryptography

Cryptanalysis

380 49, H04L 900

Patent

active

048151289

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.

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