公开(公告)号：US20030053417A1

公开(公告)日：2003-03-20

申请号：US09954192

申请日：2001-09-18

Applicant: NORTEL NETWORKS LIMITED

Inventor： Ernst A. Munter ,  Delfin Y. Montuno ,  James Aweya

IPC: H04L012/50

CPC classification number: H04L49/10 ,  H04L49/25 ,  H04L49/90

Abstract: A rotator switch includes active and redundant tandem buffers used to switch information units through the switch. The tandem buffers are interconnected to inputs and outputs by way of commutators. Information provided to one or more of the active buffers is provided to a redundant buffer. If an active tandem buffer fails, the switch may use the redundant buffer in place of the failed active buffer. A further rotator switch is formed using a plurality of switching blocks. Each switching block includes its own set of tandem buffers, and ingress and egress commutators to interconnect the tandem buffers to inputs and outputs. The plurality of switching blocks is interconnected using additional commutators. At least one of these switching blocks is redundant and is provided with information provided to an active switching block. In the event of failure of an active block, the switch may use a redundant switching block in place of the failed or replaced active block.

Abstract translation: 旋转开关包括用于通过开关切换信息单元的主动和冗余串联缓冲器。 串联缓冲器通过换向器与输入和输出互连。 提供给一个或多个活动缓冲器的信息被提供给冗余缓冲器。 如果主动串联缓冲区出现故障，则交换机可能会使用冗余缓冲区来代替故障的主动缓冲区。 使用多个切换块形成另外的旋转开关。 每个切换块包括其自己的串联缓冲器集合，以及用于将串联缓冲器互连到输入和输出的入口和出口换向器。 多个切换块使用附加换向器互连。 这些切换块中的至少一个是冗余的并且被提供有提供给有源切换块的信息。 在活动块发生故障的情况下，交换机可以使用冗余交换块来代替故障或更换的活动块。