公开(公告)号：US07139264B1

公开(公告)日：2006-11-21

申请号：US09590331

申请日：2000-06-08

Applicant: Iain J Slater

Inventor： Iain J Slater

IPC: H04L12/66

CPC classification number: H04J3/0679 ,  H04J3/0647 ,  H04J2203/0041 ,  H04J2203/006 ,  H04J2203/0076 ,  H04Q11/0478

Abstract: In a synchronous digital communications system a network of SDH (or SONET) equipments (SE) are arranged to exchange synchronisation signals via ports on the SEs, each port being allocated a source identifier (SID). These SIDs are used to identify the source of each synchronisation signal input at a particular SE. When the SE selects a synchronisation signal to transmit out of its ports, the SID associated with that selected signal is compared with SID of each port. If a match is found the synchronisation status message (SSM) associated with the synchronisation signal sent out at that port is set to “Do Not Use” (DNU) to warn the destination SE that the synchronisation signal has been looped back. Each SE is allocated a unique equipment identifier. The SID of each port is set to the unique SE identifier of SE to which it is directly connected.

Abstract translation: 在同步数字通信系统中，设置SDH（或SONET）设备（SE）的网络以通过SE上的端口交换同步信号，每个端口被分配源标识符（SID）。 这些SID用于识别在特定SE处输入的每个同步信号的源。 当SE选择同步信号从其端口发送时，将与该选择信号相关联的SID与每个端口的SID进行比较。 如果发现一个匹配，与在该端口发出的同步信号相关联的同步状态消息（SSM）被设置为“不使用”（DNU），以向目的地SE警告同步信号已被环回。 每个SE都被分配一个唯一的设备标识符。 每个端口的SID被设置为与其直接相连的SE的唯一SE标识符。

公开(公告)号：US5956347A

公开(公告)日：1999-09-21

申请号：US834343

申请日：1997-04-16

Applicant: Iain J Slater

Inventor： Iain J Slater

IPC: H04J3/00 ,  H04J3/06 ,  H04J3/07 ,  H04L7/08 ,  H04L29/14 ,  H04Q11/04 ,  H04J3/04

CPC classification number: H04J3/076 ,  H04J2203/006 ,  H04J3/0688

Abstract: In an SDH telecommunications system, a buffer overfill/underfill problem, which is consequent upon either a synchronization failure or an excessive amount of wander, is overcome by detecting such failure or wander and temporarily changing the mode of operation of a de-synchronizer at a terminating end of the SDH path. A Synchronization Status Messaging Byte (SSMB) is used as an indicator of the quality of the incoming bearer timing.

Abstract translation: 在SDH电信系统中，通过检测到这种故障或漂移并暂时改变同步器的操作模式来克服在同步失败或过多量的漂移中产生的缓冲区溢出/底部填充问题， 终止SDH路径。 使用同步状态消息字节（SSMB）作为传入承载定时质量的指标。

公开(公告)号：US06731656B1

公开(公告)日：2004-05-04

申请号：US09419414

申请日：1999-10-15

Applicant: Iain J Slater ,  Laurence Arden

Inventor： Iain J Slater ,  Laurence Arden

IPC: H04J304

CPC classification number: H04J3/1617 ,  H04J3/0685 ,  H04J2203/008 ,  H04J2203/0085 ,  H04J2203/0094

Abstract: A communications system utilizes, inverse multiplexing to transfer wide band signals over a plurality of narrow band links. To enable efficient use of the available links, incoming data whether or not cell or packet based, is inverse multiplexed in a byte format regardless of packet boundaries into virtual containers. Overhead signals are generated to enable the original data to be reassembled at the receiving end.

Abstract translation: 通信系统利用逆多路复用来在多个窄带链路上传送宽带信号。 为了有效利用可用的链路，无论基于信元还是分组的输入数据都以字节格式被反向多路复用，无论数据包边界如何，都可以进入虚拟容器。 生成开销信号以使原始数据在接收端重新组合。

公开(公告)号：US06240106B1

公开(公告)日：2001-05-29

申请号：US08945898

申请日：1997-12-24

Applicant: Iain J Slater

Inventor： Iain J Slater

IPC: H04J306

CPC classification number: H04J3/0685 ,  H04J3/076

Abstract: A retiming arrangement for use in a demultiplexer in an SDH data transmission system uses Bit Justification data, and not Pointer data, to modify a recovered clock signal and generate a clock signal for retiming purposes. The invention is especially for use in enabling third party users to carry primary rate timing data across an SDH network.

Abstract translation: 在SDH数据传输系统中用于解复用器的重定时装置使用位对齐数据而不是指针数据来修改恢复的时钟信号并产生用于重定时目的的时钟信号。 本发明特别用于使第三方用户能够跨SDH网络传送主速率定时数据。

公开(公告)号：US06560245B1

公开(公告)日：2003-05-06

申请号：US09432318

申请日：1999-11-02

Applicant: Iain J Slater

Inventor： Iain J Slater

IPC: H04J302

CPC classification number: H04J3/0641 ,  H04J3/0647 ,  H04J3/0688 ,  H04J3/085

Abstract: In a network of SDH equipments (e.g. synchonous multiplexers add-drop or SMA) for the communication of signals comprising data, a synchronization signal for synchronizing the data and a synchronization status message (SSM) indicating the quality of the source of the synchronization signal, when a synchronization signal is output via a sychronization signal output (SSO) to a stand-alone synchronization equipment (SASE) for conditioning and subsequently input via a synchronization signal input (SSI), the SSM information may be lost. The invention provides means for associating, within the SDH equipment, the revelant SSM with the synchronization signal input at the SSI.

Abstract translation: 在用于包括数据的信号的通信的SDH设备（例如，同步多路复用器加法器或SMA）的网络中，用于同步数据的同步信号和指示同步信号的源的质量的同步状态消息（SSM） 当通过同步信号输出（SSO）将同步信号输出到独立的同步设备（SASE），以便经由同步信号输入（SSI）进行调节并随后输入时，SSM信息可能丢失。 本发明提供了在SDH设备内关联SSI与SSI输入的同步信号的装置。