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    • 17. 发明授权
    • Radio wireline interface and method for secure communication
    • 无线电线接口和安全通信方法
    • US06356638B1
    • 2002-03-12
    • US09124719
    • 1998-07-30
    • Douglas Allan HardyPeter J. Armbruster
    • Douglas Allan HardyPeter J. Armbruster
    • H04L0900
    • H04K1/00
    • An interface between a digital communication system and a PSTN establishes a user configurable secure encrypted link to a digital subscriber unit through the digital communication system, and provides clear (unencrypted) voice to telephone sets through the PSTN. The interface includes a security module for encrypting and decrypting information with user specific algorithms and keys, a transcoder for converting modulated voice to digital voice and a modem for modulating and demodulating data and encrypted voice. Accordingly, the wireline interface allows for user specified security over a digital wireless portion of an end-to-end communication channel. The interface also provides for the communication of unencrypted voice followed by secure voice or secure data.
    • 数字通信系统和PSTN之间的接口通过数字通信系统建立到数字用户单元的用户可配置的安全加密链路,并通过PSTN向电话机提供清晰(未加密的)语音。 该接口包括用于用用户特定算法和密钥加密和解密信息的安全模块,用于将调制语音转换成数字语音的代码转换器和用于调制和解调数据和加密语音的调制解调器。 因此,有线接口允许通过端到端通信信道的数字无线部分的用户指定的安全性。 该接口还提供未加密语音的通信,然后是安全语音或安全数据。
    • 19. 发明授权
    • Communication method and network with multiple dynamic intraswitching
    • 通信方式和网络具有多个动态内部切换
    • US5509004A
    • 1996-04-16
    • US283415
    • 1994-08-01
    • James W. Bishop, Jr.Peter J. Armbruster
    • James W. Bishop, Jr.Peter J. Armbruster
    • H04B7/185H04L12/64H04L12/66
    • H04B7/1856
    • A communication network (10) includes a constellation of satellites (12) in orbit around the earth. Gateways (14) communicate with the satellites (12), reside on the surface of the earth, and interface the network (10) to the local PSTN (18). User units (16) communicate with satellites (12) and provide communication services to users. A gateway (14) includes a mobile switching center (22), which connects half-calls, and an earth terminal controller (20), which occasionally overrides connections defined in the mobile switching center (22). When possible, communication paths connected at the mobile switching center (22) are intraswitched at one or more satellites (12) rather than being routed through the mobile switching center. However, when supplementary services are requested, the communication path is reconfigured back to the mobile switching center (22) so that additional signals may be inserted into the communication path.
    • 通信网络(10)包括围绕地球轨道的卫星星座(12)。 网关(14)与卫星(12)通信,驻留在地面上,并将网络(10)接入本地PSTN(18)。 用户单元(16)与卫星(12)通信,并向用户提供通信服务。 网关(14)包括连接半呼叫的移动交换中心(22)和有时覆盖在移动交换中心(22)中定义的连接的接地终端控制器(20)。 在可能的情况下,在移动交换中心(22)处连接的通信路径在一个或多个卫星(12)内进行交换,而不是通过移动交换中心路由。 然而,当请求补充服务时,将通信路径重新配置回移动交换中心(22),以便可以在通信路径中插入附加信号。