Encryption STE communications through private branch exchange (PBX)
First Claim
1. A portable reach-back communications terminal, comprising:
- an encryption device, of a portable secure communications terminal, to encrypt a signal produced by a private branch exchange (PBX) handset base of said portable secure communications terminal; and
an audio mixer, of said portable secure communications terminal, between an input from said PBX handset base of said portable secure communication terminal and said encryption device, said audio mixer converting a 4-wire input from said PBX handset base into a 2-wire output connected to said encryption device.
4 Assignments
0 Petitions
Accused Products
Abstract
A reach back secure communications terminal includes a digital PBX adapter that offers immediate and secure voice, data and video connectivity over any of various commercially available PBX systems. In addition to use with a PBX system, integrated components simplify access to varied networks allowing deployed users to select and connect quickly to a network that best supports their present mission. Commercial or optional NSA Type 1 encryption may be implemented. Networking options include any of PSTN, PBX, GSM (or CDMA or other cell telephone standard), SAT, IP and WiFi. The digital PBX adapter includes an audio mixer that converts a 4-wire input from a handset jack of a PBX handset base, into a 2-wire output destined for an encryption unit (FNBDT). The user determines a necessary gain of the audio mixer for the particular PBX system by trial and error using a multi-position switch.
66 Citations
21 Claims
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1. A portable reach-back communications terminal, comprising:
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an encryption device, of a portable secure communications terminal, to encrypt a signal produced by a private branch exchange (PBX) handset base of said portable secure communications terminal; and an audio mixer, of said portable secure communications terminal, between an input from said PBX handset base of said portable secure communication terminal and said encryption device, said audio mixer converting a 4-wire input from said PBX handset base into a 2-wire output connected to said encryption device. - View Dependent Claims (2, 3, 4, 19)
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5. A method of allowing encrypted communications over an unsecure private branch exchange (PBX) system, comprising:
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disconnecting a handset from a PBX handset base unit of a portable secure communications terminal; connecting a 4-wire input of an audio mixer to a handset jack on said PBX handset base unit vacated by said handset, said auto mixer of said portable secure communications terminal converting said 4-wire input from said PBX handset base into a 2-wire output; and connecting an encryption device, to encrypt a signal produced by said PBX handset base unit of said portable secure communications terminal, to said 2-wire output of said audio mixer. - View Dependent Claims (6, 7, 8, 9, 10, 11, 20)
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12. Apparatus for allowing encrypted communications over an unsecure private branch exchange (PBX) system, comprising:
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means for disconnecting a handset from a PBX handset base unit of a portable secure communications terminal; means for connecting a 4-wire input of an audio mixer to a handset jack on said PBX handset base unit vacated by said handset, said auto mixer of said portable secure communications terminal converting said 4-wire input from said PBX handset base into a 2-wire output; and means for connecting an encryption device, to encrypt a signal produced by said PBX handset base unit of said portable secure communications terminal, to said 2-wire output of said audio mixer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 21)
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Specification