公开(公告)号：US08068430B2

公开(公告)日：2011-11-29

申请号：US12263893

申请日：2008-11-03

申请人： Alon Geva ,  Ehud Malik ,  Yaakov Stein

发明人： Alon Geva ,  Ehud Malik ,  Yaakov Stein

IPC分类号： G01G31/08 ,  H04J3/16

CPC分类号： H04L12/2879 ,  H04J3/0667 ,  H04J3/0673

摘要： A method and system in which a Digital Subscriber Line Access Multiplexer (DSLAM) that is part of a DSL (Digital Subscriber Line) system is able to provide synchronous services to end user equipment connected to the DSLAM via a DSL link and Customer Premises Equipment (CPE). A sniffer device having direct or indirect access to a Primary Reference Clock (PRC) of the DSL system calculates the phase difference between the PRC and the DSLAM's Local Timing Reference (LTR). The phase difference is sent to the CPEs requiring accurate reference clock frequency. The CPEs are able to derive the PRC from the phase difference information transmitted by the sniffer device thus enabling synchronous end user equipment operation.

摘要翻译： 作为DSL（数字用户线路）系统的一部分的数字用户线路接入复用器（DSLAM）能够通过DSL链路和客户端设备（例如，向DSLAM提供连接到DSLAM的终端用户设备）提供同步服务的方法和系统 CPE）。 具有对DSL系统的主参考时钟（PRC）的直接或间接访问的嗅探装置计算PRC和DSLAM的本地定时参考（LTR）之间的相位差。 相位差发送到需要精确参考时钟频率的CPE。 CPE能够根据由嗅探装置发送的相位差信息导出PRC，从而实现同步最终用户设备的操作。

公开(公告)号：US20100111114A1

公开(公告)日：2010-05-06

申请号：US12263893

申请日：2008-11-03

申请人： Alon GEVA ,  Ehud MALIK ,  Yaakov STEIN

发明人： Alon GEVA ,  Ehud MALIK ,  Yaakov STEIN

IPC分类号： H04J3/06

CPC分类号： H04L12/2879 ,  H04J3/0667 ,  H04J3/0673

摘要： A method and system in which a Digital Subscriber Line Access Multiplexer (DSLAM) that is part of a DSL (Digital Subscriber Line) system is able to provide synchronous services to end user equipment connected to the DSLAM via a DSL link and Customer Premises Equipment (CPE). A sniffer device having direct or indirect access to a Primary Reference Clock (PRC) of the DSL system calculates the phase difference between the PRC and the DSLAM's Local Timing Reference (LTR). The phase difference is sent to the CPEs requiring accurate reference clock frequency. The CPEs are able to derive the PRC from the phase difference information transmitted by the sniffer device thus enabling synchronous end user equipment operation.

摘要翻译： 作为DSL（数字用户线路）系统的一部分的数字用户线路接入复用器（DSLAM）能够通过DSL链路和客户端设备（例如，向DSLAM提供连接到DSLAM的终端用户设备）提供同步服务的方法和系统 CPE）。 具有对DSL系统的主参考时钟（PRC）的直接或间接访问的嗅探装置计算PRC和DSLAM的本地定时参考（LTR）之间的相位差。 相位差发送到需要精确参考时钟频率的CPE。 CPE能够根据由嗅探装置发送的相位差信息导出PRC，从而实现同步最终用户设备的操作。

公开(公告)号：US20120063473A1

公开(公告)日：2012-03-15

申请号：US13297723

申请日：2011-11-16

申请人： Alon GEVA ,  Ehud MALIK ,  Yaakov STEIN

发明人： Alon GEVA ,  Ehud MALIK ,  Yaakov STEIN

IPC分类号： H04J3/06

CPC分类号： H04L12/2879 ,  H04J3/0667 ,  H04J3/0673

摘要： A method and system in which a Digital Subscriber Line Access Multiplexer (DSLAM) that is part of a DSL (Digital Subscriber Line) system is able to provide synchronous services to end user equipment connected to the DSLAM via a DSL link and Customer Premises Equipment (CPE). A sniffer device having direct or indirect access to a Primary Reference Clock (PRC) of the DSL system calculates the phase difference between the PRC and the DSLAM's Local Timing Reference (LTR). The phase difference is sent to the CPEs requiring accurate reference clock frequency. The CPEs are able to derive the PRC from the phase difference information transmitted by the sniffer device thus enabling synchronous end user equipment operation.

摘要翻译： 作为DSL（数字用户线路）系统的一部分的数字用户线路接入复用器（DSLAM）能够通过DSL链路和客户端设备（例如，向DSLAM提供连接到DSLAM的终端用户设备）提供同步服务的方法和系统 CPE）。 具有对DSL系统的主参考时钟（PRC）的直接或间接访问的嗅探装置计算PRC和DSLAM的本地定时参考（LTR）之间的相位差。 相位差发送到需要精确参考时钟频率的CPE。 CPE能够根据由嗅探装置发送的相位差信息导出PRC，从而实现同步最终用户设备的操作。

公开(公告)号：US08660150B2

公开(公告)日：2014-02-25

申请号：US13297723

申请日：2011-11-16

申请人： Alon Geva ,  Ehud Malik ,  Yaakov Stein

发明人： Alon Geva ,  Ehud Malik ,  Yaakov Stein

IPC分类号： H04J3/06

CPC分类号： H04L12/2879 ,  H04J3/0667 ,  H04J3/0673

摘要： A method and system in which a Digital Subscriber Line Access Multiplexer (DSLAM) that is part of a DSL (Digital Subscriber Line) system is able to provide synchronous services to end user equipment connected to the DSLAM via a DSL link and Customer Premises Equipment (CPE). A sniffer device having direct or indirect access to a Primary Reference Clock (PRC) of the DSL system calculates the phase difference between the PRC and the DSLAM's Local Timing Reference (LTR). The phase difference is sent to the CPEs requiring accurate reference clock frequency. The CPEs are able to derive the PRC from the phase difference information transmitted by the sniffer device thus enabling synchronous end user equipment operation.

摘要翻译： 作为DSL（数字用户线路）系统的一部分的数字用户线路接入复用器（DSLAM）能够通过DSL链路和客户端设备（例如，向DSLAM提供连接到DSLAM的终端用户设备）提供同步服务的方法和系统 CPE）。 具有对DSL系统的主参考时钟（PRC）的直接或间接访问的嗅探装置计算PRC和DSLAM的本地定时参考（LTR）之间的相位差。 相位差发送到需要精确参考时钟频率的CPE。 CPE能够根据由嗅探装置发送的相位差信息导出PRC，从而实现同步最终用户设备的操作。