公开(公告)号：US5029163A

公开(公告)日：1991-07-02

申请号：US169687

申请日：1988-03-18

申请人： Phillip C. J. Chao ,  Bong S. Choe ,  Robert C. Fairfield ,  Thomas L. Hiller ,  Robert W. King ,  Joel D. Peshkin ,  Ralph A. Wilson, III

发明人： Phillip C. J. Chao ,  Bong S. Choe ,  Robert C. Fairfield ,  Thomas L. Hiller ,  Robert W. King ,  Joel D. Peshkin ,  Ralph A. Wilson, III

IPC分类号： H04J3/00 ,  H04J3/16 ,  H04J3/22 ,  H04L5/22 ,  H04L29/06 ,  H04Q11/04

CPC分类号： H04Q11/0464 ,  H04J3/1647

摘要： A synchronous protocol data formatter handles all 24-32 channels of a so-called primary rate version of a digital multiplexed interface or ISDN Primary Rates Interface for a communication system. The formatter relieves the host computer of the local area network of some highly specialized tasks, and, at the same time, provides the following augmented capabilities, which exceed those required by the C.C.I.T.T. standard, I.431:1. dynamic channel bandwidth allocation can assign arbitrary (even non-adjacent) time slots to create a super channel;2. a circular interrupt-queue in a shared memory enables the formatter and the host computer of the local area network to interact efficiently in updating and responding to changing conditions; and3. cyclical redundancy codes can be used on a more flexible basis than theretofore, e.g., can be generated upon only address and control fields for digitized voice signals, or, in a relay mode, can substitute an existing cyclical redundancy code to guard against memory errors.

摘要翻译： 同步协议数据格式器处理所有24-32个通道，用于通信系统的数字多路复用接口或ISDN主速率接口的所谓主速率版本。 格式化程序缓解了局域网主机的一些高度专业化的任务，同时提供了以下增强功能，超出了C.C.I.T.T.所要求的功能。 标准，I.431：1.动态信道带宽分配可以分配任意（甚至非相邻）时隙来创建超级信道; 2.共享存储器中的循环中断队列使得局域网的格式化器和主计算机能够有效地进行更新和响应不断变化的条件; 和循环冗余代码可以比以前更灵活地使用，例如，可以仅在数字化语音信号的地址和控制字段上生成，或者在中继模式中，可以替代现有的循环冗余码来防范 内存错误。

公开(公告)号：US4751697A

公开(公告)日：1988-06-14

申请号：US904962

申请日：1986-09-05

申请人： Paul D. Hunter ,  James M. Johnson, Jr. ,  Christopher G. McHarg ,  David A. Pierce ,  Thomas J. J. Starr ,  Benjamin C. Widrevitz ,  Ralph A. Wilson, III ,  Meyer J. Zola

发明人： Paul D. Hunter ,  James M. Johnson, Jr. ,  Christopher G. McHarg ,  David A. Pierce ,  Thomas J. J. Starr ,  Benjamin C. Widrevitz ,  Ralph A. Wilson, III ,  Meyer J. Zola

IPC分类号： H04L12/64 ,  H04Q11/04 ,  H04J3/00

CPC分类号： H04Q11/0428 ,  H04L12/64

摘要： A switching system including a number of switching modules each having a plurality of access ports. Incoming and outgoing packet channels are extended between each switching module and an inter-module packet switch. Each switching module includes a packet switching unit that transmits user information packets, received from the access ports, via the incoming packet channel to the inter-module packet switch, and switches user information packets, received via the outgoing packet channel from the inter-module packet switch, to the access ports for inter-module packet-switched communication. The intermodule packet switch concurrently packet switches user information packets, received on a number of the incoming packet channels, via multiple independent paths to a number of the outgoing packet channels.

摘要翻译： 一种交换系统，包括多个具有多个接入端口的交换模块。 在每个交换模块和模块间分组交换机之间，进出口分组信道被扩展。 每个交换模块包括分组交换单元，其将从接入端口接收的用户信息分组经由输入分组信道发送到模块间分组交换机，并且经由输出分组信道从模块间模块切换接收到的用户信息分组 分组交换机，到接入端口进行模块间分组交换通信。 同时分组的分组分组交换机通过多个独立路径将多个输入分组信道上接收的用户信息分组交换到多个输出分组信道。