公开(公告)号：JP2002152164A

公开(公告)日：2002-05-24

申请号：JP2001271176

申请日：2001-09-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ANTOSIK ROMAN ,  SCHNABLE ANDREW ,  STROLL LEWIS K ,  UKEILEY RICHARD L

IPC: H04B10/24 ,  H04B10/00 ,  H04J3/00 ,  H04J3/06

Abstract: PROBLEM TO BE SOLVED: To automatically match the selection of a multiplexing clock with a correspondent node. SOLUTION: The circuit for the node of an optical communication network is configured for multiplexing one or plural input customer signals and demultiplexing an input optical signal and the multiplexing clock and a demultiplexing clock are selected out of one or plural customer clocks recovered from one or plural customer signals, the input clock recovered from the input optical signal and a local clock generated by a local clock generator. This circuit is configured as a drop/continue configuration to select both the multiplexing clock and the demultiplexing clock and when a clock losing state to the multiplexing clock selected before is detected, a hardware based switch is executed to select a backup clock as a new multiplexing clock.

公开(公告)号：DE60100290T2

公开(公告)日：2004-10-28

申请号：DE60100290

申请日：2001-08-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ANTOSIK ROMAN ,  SCHNABLE ANDREW ,  STROLL LEWIS K ,  UKEILEY RICHARD

IPC: H04B10/24 ,  H04B10/00 ,  H04J3/00 ,  H04J3/06

Abstract: Circuitry for a node of an optical communication network is configured to mux (i.e., combine) one or more incoming customer signals for transmission as a single outgoing optical signal and to demux (i.e., split) an incoming optical signal into one or more outgoing customer signals, where the muxing and demuxing clocks are selected from one or more customer clocks recovered from the one or more customer signals, an input clock recovered from the incoming optical signal, and a local clock generated by a local clock generator. When configured for an add/drop configuration, the circuitry selects (1) the muxing clock from the one or more customer clocks, the input clock, and the local clock and (2) the demuxing clock from the input clock and the local clock. When configured for a drop/continue configuration, the circuitry is configured to select both the muxing and demuxing clocks from either the first input clock or the local clock. The circuitry is configured to perform a hardware-based switch to select the backup clock as the new muxing clock upon detection of a loss-of-clock condition for the previously selected muxing clock. The node automatically coordinates its selection of muxing clocks with the other corresponding node in order to avoid loop-timing problems.

公开(公告)号：CA2353696C

公开(公告)日：2005-11-01

申请号：CA2353696

申请日：2001-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SCHNABLE ANDREW ,  ANTOSIK ROMAN ,  UKEILEY RICHARD L ,  STROLL LEWIS K

IPC: H04B10/24 ,  H04B10/00 ,  H04J3/00 ,  H04J3/06 ,  H04B10/14 ,  H04J14/02 ,  H04B10/20

Abstract: Circuitry for a node of an optical communication network is configured to m ux (i.e., combine) one or more incoming customer signals for transmission as a single outgoing optical signal and to demux (i.e., split) an incoming optical signa l into one or more outgoing customer signals, where the muxing and demuxing clocks are selected from one or more customer clocks recovered from the one or more customer signals, an input clock recovered from the incoming optical signal, and a local clock generated by a local clock generator. When configured for an add/drop configuration, the circuitry selects (1) the muxing clock from the one or more customer clocks, the input clock, and the local clock and (2) the demuxing clock from the input clock and the loca l clock. When configured for a drop/continue configuration, the circuitry is configur ed to select both the muxing and demuxing clocks from either the first input clock or the local clock. The circuitry is configured to perform a hardware-based switch to select the backup clock as the new muxing clock upon detection of a loss-of clock condition fo r the previously selected muxing clock. The node automatically coordinates its selection of muxing clocks with the other corresponding node in order to avoid loop-timin g problems.

公开(公告)号：DE60100290D1

公开(公告)日：2003-06-26

申请号：DE60100290

申请日：2001-08-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ANTOSIK ROMAN ,  SCHNABLE ANDREW ,  STROLL LEWIS K ,  UKEILEY RICHARD

IPC: H04B10/24 ,  H04B10/00 ,  H04J3/00 ,  H04J3/06

Abstract: Circuitry for a node of an optical communication network is configured to mux (i.e., combine) one or more incoming customer signals for transmission as a single outgoing optical signal and to demux (i.e., split) an incoming optical signal into one or more outgoing customer signals, where the muxing and demuxing clocks are selected from one or more customer clocks recovered from the one or more customer signals, an input clock recovered from the incoming optical signal, and a local clock generated by a local clock generator. When configured for an add/drop configuration, the circuitry selects (1) the muxing clock from the one or more customer clocks, the input clock, and the local clock and (2) the demuxing clock from the input clock and the local clock. When configured for a drop/continue configuration, the circuitry is configured to select both the muxing and demuxing clocks from either the first input clock or the local clock. The circuitry is configured to perform a hardware-based switch to select the backup clock as the new muxing clock upon detection of a loss-of-clock condition for the previously selected muxing clock. The node automatically coordinates its selection of muxing clocks with the other corresponding node in order to avoid loop-timing problems.

公开(公告)号：CA2353696A1

公开(公告)日：2002-03-08

申请号：CA2353696

申请日：2001-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SCHNABLE ANDREW ,  STROLL LEWIS K ,  UKEILEY RICHARD L ,  ANTOSIK ROMAN

IPC: H04B10/24 ,  H04B10/00 ,  H04J3/00 ,  H04J3/06 ,  H04B10/14 ,  H04J14/02 ,  H04B10/20

Abstract: Circuitry for a node of an optical communication network is configured to m ux (i.e., combine) one or more incoming customer signals for transmission as a single outgoing optical signal and to demux (i.e., split) an incoming optical signa l into one or more outgoing customer signals, where the muxing and demuxing clocks are selected from one or more customer clocks recovered from the one or more customer signals, an input clock recovered from the incoming optical signal, and a local clock generated by a local clock generator. When configured for an add/drop configuration, the circuitry selects (1) the muxing clock from the one or more customer clocks, the input clock, and the local clock and (2) the demuxing clock from the input clock and the loca l clock. When configured for a drop/continue configuration, the circuitry is configur ed to select both the muxing and demuxing clocks from either the first input clock or the local clock. The circuitry is configured to perform a hardware-based switch to select the backup clock as the new muxing clock upon detection of a loss-of clock condition fo r the previously selected muxing clock. The node automatically coordinates its selection of muxing clocks with the other corresponding node in order to avoid loop-timin g problems.