公开(公告)号：US06351452B1

公开(公告)日：2002-02-26

申请号：US09233007

申请日：1999-01-19

申请人： Roger L. Koenig ,  S. Christopher Alaimo ,  Timothy Groth ,  Debra M. Rose ,  Shri B. Dodani ,  Raviraj Edwards ,  Bharat S. Shah ,  Kenneth M. Stevens ,  Matthew Morris

发明人： Roger L. Koenig ,  S. Christopher Alaimo ,  Timothy Groth ,  Debra M. Rose ,  Shri B. Dodani ,  Raviraj Edwards ,  Bharat S. Shah ,  Kenneth M. Stevens ,  Matthew Morris

IPC分类号： H04L1228

CPC分类号： H04Q1/028 ,  H04J3/14 ,  H04J3/1623

摘要： A telecommunication device for receiving and transmitting DS1 level signals that includes a 1/0 digital cross-connect switch, a GR-303 concentrator, and a frame relay aggregator switch in a single integrated device in one housing that fills less than two standard rack units. The device includes both active and standby/backup controller cards that communicate with eight quad framer cards through a bus located in the backplane. The communication through the backplane is via a 8.192 Mbps signal to and from each quad framer card, passed along a bus. The 8.192 Mbps signal is generated by multiplexing the four DS1 (E-1) signals on the quad framer card. The controller card that is active monitors the status of the DS1 channel associated with each framer and stores historical data about the status in spare buffer registers on each framer. Whenever a transition occurs to the standby/backup controller card, that card can obtain the historical status information from the framers to make the transition more seamless. The device also includes software that is interrupted on signaling bit changes, so that a software program can control a digital cross-connect of the signaling bits, and translation if necessary.

摘要翻译： 一种电信设备，用于在一个外壳中接收和发送包含1/0数字交叉连接交换机，GR-303集中器和帧中继集线器开关的DS1电平信号，该单体集成设备填充少于两个标准机架单元 。 该设备包括通过位于背板中的总线与八个四帧成帧器卡通信的主动和备用/备用控制器卡。 通过背板的通信是通过一条8.192 Mbps的信号往返于每个四路成帧卡，沿着总线传递。 8.192 Mbps信号是通过复用四个成帧器卡上的四个DS1（E-1）信号来产生的。 有效的控制器卡监控与每个成帧器相关联的DS1通道的状态，并将有关状态的历史数据存储在每个成帧器的备用缓冲寄存器中。 每当备用/备用控制器卡发生转换时，该卡可以从成帧器获取历史状态信息，使转换更为无缝。 该设备还包括在信令位改变时中断的软件，使得软件程序可以控制信令位的数字交叉连接，并且如果需要可以进行转换。