GB2283884B - Add/drop multiplexer apparatus - Google Patents

Add/drop multiplexer apparatus

Info

Publication number
GB2283884B
GB2283884B GB9421667A GB9421667A GB2283884B GB 2283884 B GB2283884 B GB 2283884B GB 9421667 A GB9421667 A GB 9421667A GB 9421667 A GB9421667 A GB 9421667A GB 2283884 B GB2283884 B GB 2283884B
Authority
GB
United Kingdom
Prior art keywords
add
drop multiplexer
multiplexer apparatus
drop
multiplexer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9421667A
Other versions
GB9421667D0 (en
GB2283884A (en
Inventor
Peter Raymond Ball
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB939323170A external-priority patent/GB9323170D0/en
Priority claimed from GB9406520A external-priority patent/GB9406520D0/en
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to GB9421667A priority Critical patent/GB2283884B/en
Priority to GB9818903A priority patent/GB2324687B/en
Publication of GB9421667D0 publication Critical patent/GB9421667D0/en
Publication of GB2283884A publication Critical patent/GB2283884A/en
Application granted granted Critical
Publication of GB2283884B publication Critical patent/GB2283884B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0028—Local loop
    • H04J2203/0039—Topology
    • H04J2203/0042—Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0089—Multiplexing, e.g. coding, scrambling, SONET

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
GB9421667A 1993-11-10 1994-10-27 Add/drop multiplexer apparatus Expired - Fee Related GB2283884B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9421667A GB2283884B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus
GB9818903A GB2324687B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939323170A GB9323170D0 (en) 1993-11-10 1993-11-10 Add/drop multiplexer apparatus
GB9406520A GB9406520D0 (en) 1994-03-31 1994-03-31 Add/drop multiplexer apparatus
GB9421667A GB2283884B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus

Publications (3)

Publication Number Publication Date
GB9421667D0 GB9421667D0 (en) 1994-12-14
GB2283884A GB2283884A (en) 1995-05-17
GB2283884B true GB2283884B (en) 1998-12-16

Family

ID=27266922

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9818903A Expired - Fee Related GB2324687B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus
GB9421667A Expired - Fee Related GB2283884B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9818903A Expired - Fee Related GB2324687B (en) 1993-11-10 1994-10-27 Add/drop multiplexer apparatus

Country Status (1)

Country Link
GB (2) GB2324687B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9401430D0 (en) * 1994-01-26 1994-03-23 Plessey Telecomm Switching system for a telecommunications system
JP3442180B2 (en) * 1995-02-23 2003-09-02 富士通株式会社 Add-drop multiplex equipment
GB9809990D0 (en) * 1998-05-12 1998-07-08 Northern Telecom Ltd Integrated telecommunications line system and cross-connect

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947389A (en) * 1989-06-06 1990-08-07 At&T Bell Laboratories Multi-channel ring architecture for distributed networks

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9005723D0 (en) * 1990-03-14 1990-05-09 Plessey Telecomm Switch for multiplexes
US5008881A (en) * 1990-05-18 1991-04-16 At&T Bell Laboratories Chordal ring network
GB9401430D0 (en) * 1994-01-26 1994-03-23 Plessey Telecomm Switching system for a telecommunications system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947389A (en) * 1989-06-06 1990-08-07 At&T Bell Laboratories Multi-channel ring architecture for distributed networks

Also Published As

Publication number Publication date
GB9421667D0 (en) 1994-12-14
GB9818903D0 (en) 1998-10-21
GB2283884A (en) 1995-05-17
GB2324687A (en) 1998-10-28
GB2324687B (en) 1998-12-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20001027