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1. 发明授权

US4731785A Combined circuit switch and packet switching system 失效
标题翻译：组合电路交换机和分组交换系统
公开(公告)号：US4731785A
公开(公告)日：1988-03-15
申请号：US876613
申请日：1986-06-20
申请人： James J. Ferenc , Robert W. Gebhardt , Gary J. Grimes , Edward B. Morgan, Jr. , Gabe A. Sellers, III
发明人： James J. Ferenc , Robert W. Gebhardt , Gary J. Grimes , Edward B. Morgan, Jr. , Gabe A. Sellers, III
IPC分类号： H04Q11/04 , H04J3/16 , H04L12/64 , H04J3/02 , H04J3/24
CPC分类号： H04J3/1682
摘要： Apparatus for and a method of inserting circuit switch information and packetized data into different time slots of a time division multiplexed bus. A memory having a location individual to each time slot is written with information specifying whether the time slot individual to each location is to serve circuit switch information or packet data. The readout of each memory location during the occurrence of it's associated time slot controllably effects the application of either the circuit switch information or the packet data to the bus. Packet data can be inserted into each time slot not currently being used by the circuit switch. A special information bit is inserted into each time slot to specify whether the remainder of the bits of the time slot represents circuit switch or packet information. The information bit is used by receiving apparatus to steer the bits of each time slot to either a receiving circuit switch or a receiving packet switch.
摘要翻译：将电路交换信息和分组数据插入到时分复用总线的不同时隙中的装置和方法。具有每个时隙独立的位置的存储器被写入具有指定每个位置的个别时隙是否用于电路交换信息或分组数据的信息。每个存储器位置在其相关时隙发生期间的读出可控地影响电路交换机信息或分组数据到总线的应用。分组数据可以插入电路交换机当前未使用的每个时隙。每个时隙中插入一个特殊信息位，以指定该时隙的剩余位是否表示电路交换机或分组信息。信息位由接收装置用于将每个时隙的比特转向接收电路交换机或接收分组交换机。

2. 发明授权

US5093827A Control architecture of a multi-node circuit- and packet-switching system 失效
标题翻译：多节点电路和分组交换系统的控制架构
公开(公告)号：US5093827A
公开(公告)日：1992-03-03
申请号：US410777
申请日：1989-09-21
申请人： Andrew D. Franklin , Robert W. Gebhardt
发明人： Andrew D. Franklin , Robert W. Gebhardt
IPC分类号： H04L12/64 , H04Q11/04
CPC分类号： H04L12/64 , H04Q11/04
摘要： A distributed control arrangement for a multi-mode circuit-switching or circuit- and packet-switching system avoids disadvantages attendant to a centralized control center and offers flexibility in the sourcing of communication-routing information. The switching system communicatively interconnects a plurality of communication endpoints, such as PBXs, and includes a plurality of circuit-switching units interconnected with each other and with the endpoints by at least one communication medium. Control is effected through a plurality of logical links of the LAPD communication protocol, one of which extends through the medium between each pair of adjacent units and of adjacent unit and endpoint. Each unit is responsive to receipt of a messeage that specifies a route of a circuit-switched communication path through the system, including through the receiving unit. The message contains a plurality of address bytes each one of which specifies a segment of the route through the system: the bytes specify a sequence of system nodes through which the path extends. In response to receiving the message over a first link that extends to the receiving unit from another unit or an endpoint, the receiving unit establishes a communication path for the communication from the adjacent unit or endpoint from which the first link extends, through the receiving unit, and to an adjacent unit or endpoint-en-route of the communication. The individual unit then also sends the received message to the adjacent en-route unit or endpoint, over a second link which extends between the individual unit and the adjacent en-route unit or endpoint.
摘要翻译：用于多模式电路切换或电路和分组交换系统的分布式控制装置避免了与集中式控制中心相关的缺点，并提供了通信路由信息采购的灵活性。交换系统通信地互连诸如PBX的多个通信端点，并且包括通过至少一个通信介质彼此互连并且与端点互连的多个电路交换单元。通过LAPD通信协议的多个逻辑链路来实现控制，其中一个逻辑链路中的一个延伸穿过每对相邻单元之间的介质以及相邻单元和端点。每个单元响应于接收到指定通过系统的电路交换通信路径的路由的消息，包括通过接收单元。消息包含多个地址字节，每个地址字节每一个指定通过系统的路由的段：字节指定路径扩展的系统节点序列。响应于通过从另一单元或端点向接收单元延伸的第一链路接收到消息，接收单元通过接收单元建立来自相邻单元或端点的通信路径，该相邻单元或端点通过接收单元，以及通信的相邻单元或端点路由。单个单元然后也通过在单独单元和相邻路由单元或端点之间延伸的第二链路将接收到的消息发送到相邻的路由单元或端点。

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