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    • 1. 发明授权
    • Application programming interface for modem and ISDN processing
    • 用于调制解调器和ISDN处理的应用程序编程接口
    • US06347093B1
    • 2002-02-12
    • US09451216
    • 1999-11-29
    • Gerald A. ReineLeo A. Goyette
    • Gerald A. ReineLeo A. Goyette
    • H04J302
    • H04Q11/0471
    • An application programming interface provides for command and data communication between a user, application or driver and a telephone data processing system which provides communication between a host computer and a telephone line. The telephone data processing system is capable of processing ISDN telephone calls as well as voice or analog-originated telephone calls. The application programming interface of the invention includes a host interface, an ISDN interface and a modem interface. The host interface receives commands and data from the user. The modem interface and ISDN interface provide commands and data communication between the host interface and the appropriate telephone call processing based on telephone call type. At the top level, the specific call type processing is transparent to the user. That is, the user need not know the type of telephone call, i.e., modem or ISDN, being processed.
    • 应用程序编程接口提供用户,应用程序或驱动程序与提供主机与电话线之间的通信的电话数据处理系统之间的命令和数据通信。 电话数据处理系统能够处理ISDN电话呼叫以及语音或模拟发起的电话呼叫。 本发明的应用编程接口包括主机接口,ISDN接口和调制解调器接口。 主机接口从用户接收命令和数据。 调制解调器接口和ISDN接口提供主机接口和基于电话呼叫类型的适当电话呼叫处理之间的命令和数据通信。 在顶层,特定的呼叫类型处理对用户是透明的。 也就是说,用户不需要知道正在处理的电话呼叫的类型,即调制解调器或ISDN。
    • 3. 发明授权
    • Redundant repeater
    • 冗余中继器
    • US4949340A
    • 1990-08-14
    • US222148
    • 1988-07-21
    • Mark L. SmithJoseph J. NicosiaDaniel A. BoudreauLeo A. Goyette
    • Mark L. SmithJoseph J. NicosiaDaniel A. BoudreauLeo A. Goyette
    • G06F11/00G06F11/20H04B1/74H04L12/46
    • H04L12/46H04B1/74G06F11/0763
    • A redundant repeater connected between two transmission mediums that can operate in a repeat state where packets are repeated between the mediums, and a standby state where no packets are repeated and where the repeater determines whether packets are being properly repeated between the transmission mediums by another device. If the repeater determines that packets are being independently repeated it remains in the standby state, and will attempt to leave the standby state and return to the repeat state only if it determines that packets on one medium are not being repeated to the second medium. Two repeaters can be redundantly connected across the same transmission mediums with one operating in repeat state and the other in standby. If one repeater fails, the other will begin repeating all received packets. The repeater determines whether packets are being properly repeated by detecting overlapping or non-overlapping packets between its two transmission mediums.
    • 连接在可以在介质之间重复分组的重复状态的操作的两个传输介质之间的冗余中继器和不重复分组的待机状态,以及中继器确定分组在另一设备之间在传输介质之间是否被正确重复的情况 。 如果中继器确定分组被独立地重复,则它保持在待机状态,并且将尝试离开备用状态,并且仅当确定在一个介质上的分组不被重复到第二媒体时才返回到重复状态。 两个中继器可以跨相同的传输介质进行冗余连接,一个操作在重复状态,另一个在待机状态。 如果一个中继器发生故障,另一个中继器将开始重复所有接收到的数据包。 中继器通过检测其两个传输介质之间的重叠或不重叠的分组来确定分组是否被正确地重复。