JPS5580989A - Automatic balancing system for exchange - Google Patents

Automatic balancing system for exchange

Info

Publication number
JPS5580989A
JPS5580989A JP15472678A JP15472678A JPS5580989A JP S5580989 A JPS5580989 A JP S5580989A JP 15472678 A JP15472678 A JP 15472678A JP 15472678 A JP15472678 A JP 15472678A JP S5580989 A JPS5580989 A JP S5580989A
Authority
JP
Japan
Prior art keywords
relay
exchange
central control
impedance
control unit
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.)
Granted
Application number
JP15472678A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6151839B2 (enrdf_load_stackoverflow
Inventor
Akihiro Kitamura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15472678A priority Critical patent/JPS5580989A/ja
Publication of JPS5580989A publication Critical patent/JPS5580989A/ja
Publication of JPS6151839B2 publication Critical patent/JPS6151839B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/56—Balancing circuitry switched-on automatically in dependence on automatically-selected lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
JP15472678A 1978-12-15 1978-12-15 Automatic balancing system for exchange Granted JPS5580989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15472678A JPS5580989A (en) 1978-12-15 1978-12-15 Automatic balancing system for exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15472678A JPS5580989A (en) 1978-12-15 1978-12-15 Automatic balancing system for exchange

Publications (2)

Publication Number Publication Date
JPS5580989A true JPS5580989A (en) 1980-06-18
JPS6151839B2 JPS6151839B2 (enrdf_load_stackoverflow) 1986-11-11

Family

ID=15590603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15472678A Granted JPS5580989A (en) 1978-12-15 1978-12-15 Automatic balancing system for exchange

Country Status (1)

Country Link
JP (1) JPS5580989A (enrdf_load_stackoverflow)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070893A (ja) * 1983-09-28 1985-04-22 Hitachi Ltd ライン回路の自動成端方式
JPS6436188A (en) * 1987-07-30 1989-02-07 Nec Corp Balance network setting system
US8001579B2 (en) 2008-10-16 2011-08-16 John Mezzalingua Associates, Inc. Downstream output level and/or output level tilt compensation device between CATV distribution system and CATV user
US8082570B2 (en) 2009-03-30 2011-12-20 John Mezzalingua Associates, Inc. Method and apparatus for a self-terminating signal path
US8098113B2 (en) 2009-05-29 2012-01-17 John Mezzalingua Associates, Inc. Self-terminating coaxial cable port
US8141122B2 (en) 2009-03-30 2012-03-20 John Mezzalingua Associates, Inc. RF terminate/permit system
US8181211B2 (en) 2009-03-30 2012-05-15 John Mezzalingua Associates, Inc. Total bandwidth conditioning device
US8179814B2 (en) 2009-03-30 2012-05-15 John Mezzalingua Associates, Inc. Automatic return path switching for a signal conditioning device
US8213457B2 (en) 2009-10-09 2012-07-03 John Mezzalingua Associates, Inc. Upstream bandwidth conditioning device
US8274566B2 (en) 2009-10-09 2012-09-25 John Mezzalingua Associates, Inc. Modulation analyzer and level measurement device
US8286209B2 (en) 2008-10-21 2012-10-09 John Mezzalingua Associates, Inc. Multi-port entry adapter, hub and method for interfacing a CATV network and a MoCA network
US8356322B2 (en) 2009-09-21 2013-01-15 John Mezzalingua Associates, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US8385219B2 (en) 2009-10-09 2013-02-26 John Mezzalingua Associates, Inc. Upstream bandwidth level measurement device
US8429695B2 (en) 2008-10-21 2013-04-23 Ppc Broadband, Inc. CATV entry adapter and method utilizing directional couplers for MoCA signal communication
US8464301B2 (en) 2008-10-16 2013-06-11 Ppc Broadband, Inc. Upstream bandwidth conditioning device between CATV distribution system and CATV user
US8516537B2 (en) 2009-10-09 2013-08-20 Ppc Broadband, Inc. Downstream bandwidth conditioning device
US8584192B2 (en) 2009-03-30 2013-11-12 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US8990881B2 (en) 2009-03-30 2015-03-24 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US9264012B2 (en) 2012-06-25 2016-02-16 Ppc Broadband, Inc. Radio frequency signal splitter
US9271026B2 (en) 2008-10-16 2016-02-23 Ppc Broadband, Inc. Dynamically configurable frequency band selection device between CATV distribution system and CATV user
US9306530B2 (en) 2010-02-01 2016-04-05 Ppc Broadband, Inc. Multipath mitigation circuit for home network
US9351051B2 (en) 2008-10-13 2016-05-24 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US9363469B2 (en) 2008-07-17 2016-06-07 Ppc Broadband, Inc. Passive-active terminal adapter and method having automatic return loss control
US9647851B2 (en) 2008-10-13 2017-05-09 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US10021343B2 (en) 2010-12-21 2018-07-10 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
US10142677B2 (en) 2008-10-21 2018-11-27 Ppc Broadband, Inc. Entry device for a CATV network
US10212392B2 (en) 2016-06-30 2019-02-19 Ppc Broadband, Inc. Passive enhanced MoCA entry device
US11076191B2 (en) 2018-01-19 2021-07-27 Ppc Broadband, Inc. Systems and methods for extending an in-home splitter network
US11910052B2 (en) 2008-10-21 2024-02-20 Ppc Broadband, Inc. Entry device for communicating external network signals and in-home network signals

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070893A (ja) * 1983-09-28 1985-04-22 Hitachi Ltd ライン回路の自動成端方式
JPS6436188A (en) * 1987-07-30 1989-02-07 Nec Corp Balance network setting system
US9363469B2 (en) 2008-07-17 2016-06-07 Ppc Broadband, Inc. Passive-active terminal adapter and method having automatic return loss control
US10257462B2 (en) 2008-07-17 2019-04-09 Ppc Broadband, Inc. Adapter for a cable-television network
US9769418B2 (en) 2008-07-17 2017-09-19 Ppc Broadband, Inc. Passive-active terminal adapter and method having automatic return loss control
US9351051B2 (en) 2008-10-13 2016-05-24 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US9647851B2 (en) 2008-10-13 2017-05-09 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US10045056B2 (en) 2008-10-13 2018-08-07 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US9781472B2 (en) 2008-10-13 2017-10-03 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US10154302B2 (en) 2008-10-13 2018-12-11 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US10187673B2 (en) 2008-10-13 2019-01-22 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US8001579B2 (en) 2008-10-16 2011-08-16 John Mezzalingua Associates, Inc. Downstream output level and/or output level tilt compensation device between CATV distribution system and CATV user
US9271026B2 (en) 2008-10-16 2016-02-23 Ppc Broadband, Inc. Dynamically configurable frequency band selection device between CATV distribution system and CATV user
US10924811B2 (en) 2008-10-16 2021-02-16 Ppc Broadband, Inc. Compensation device for maintaining a desired signal quality in transmitted signals
US8464301B2 (en) 2008-10-16 2013-06-11 Ppc Broadband, Inc. Upstream bandwidth conditioning device between CATV distribution system and CATV user
US10264325B2 (en) 2008-10-16 2019-04-16 Ppc Broadband, Inc. System, method and device having teaching and commerce subsystems
US10419813B2 (en) 2008-10-21 2019-09-17 Ppc Broadband, Inc. Passive multi-port entry adapter for preserving downstream CATV signal strength
US8429695B2 (en) 2008-10-21 2013-04-23 Ppc Broadband, Inc. CATV entry adapter and method utilizing directional couplers for MoCA signal communication
US10284903B2 (en) 2008-10-21 2019-05-07 Ppc Broadband, Inc. Entry adapters for frequency band blocking internal network signals
US10284904B2 (en) 2008-10-21 2019-05-07 Ppc Broadband, Inc. Entry adapters for conducting can signals and in-home network signals
US8286209B2 (en) 2008-10-21 2012-10-09 John Mezzalingua Associates, Inc. Multi-port entry adapter, hub and method for interfacing a CATV network and a MoCA network
US10154304B2 (en) 2008-10-21 2018-12-11 Ppc Broadband, Inc. Methods for controlling CATV signal communication between a CATV network and an in-home network, and preserving downstream CATV signal strength within the in-home network
US10341719B2 (en) 2008-10-21 2019-07-02 Ppc Broadband, Inc. Entry adapter for communicating external signals to an internal network and communicating client signals in the client network
US10341718B2 (en) 2008-10-21 2019-07-02 Ppc Broadband, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US10154303B2 (en) 2008-10-21 2018-12-11 Ppc Broadband, Inc. Entry adapter that blocks different frequency bands and preserves downstream signal strength
US10149004B2 (en) 2008-10-21 2018-12-04 Ppc Broadband, Inc. Entry device and method for communicating CATV signals and MoCA in-home network signals in an entry device
US10917685B2 (en) 2008-10-21 2021-02-09 Ppc Broadband, Inc. Entry device for communicating signals between an external network and an in-home network
US11528526B2 (en) 2008-10-21 2022-12-13 Ppc Broadband, Inc. Entry device for communicating external network signals and in-home network signals
US11910052B2 (en) 2008-10-21 2024-02-20 Ppc Broadband, Inc. Entry device for communicating external network signals and in-home network signals
US10142677B2 (en) 2008-10-21 2018-11-27 Ppc Broadband, Inc. Entry device for a CATV network
US8584192B2 (en) 2009-03-30 2013-11-12 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US8181211B2 (en) 2009-03-30 2012-05-15 John Mezzalingua Associates, Inc. Total bandwidth conditioning device
US8082570B2 (en) 2009-03-30 2011-12-20 John Mezzalingua Associates, Inc. Method and apparatus for a self-terminating signal path
US8990881B2 (en) 2009-03-30 2015-03-24 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US8141122B2 (en) 2009-03-30 2012-03-20 John Mezzalingua Associates, Inc. RF terminate/permit system
US8179814B2 (en) 2009-03-30 2012-05-15 John Mezzalingua Associates, Inc. Automatic return path switching for a signal conditioning device
US8098113B2 (en) 2009-05-29 2012-01-17 John Mezzalingua Associates, Inc. Self-terminating coaxial cable port
US9860591B2 (en) 2009-09-21 2018-01-02 Ppc Broadband, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US9516376B2 (en) 2009-09-21 2016-12-06 Ppc Broadband, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US9167286B2 (en) 2009-09-21 2015-10-20 Ppc Broadband, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US8356322B2 (en) 2009-09-21 2013-01-15 John Mezzalingua Associates, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US8213457B2 (en) 2009-10-09 2012-07-03 John Mezzalingua Associates, Inc. Upstream bandwidth conditioning device
US8274566B2 (en) 2009-10-09 2012-09-25 John Mezzalingua Associates, Inc. Modulation analyzer and level measurement device
US8516537B2 (en) 2009-10-09 2013-08-20 Ppc Broadband, Inc. Downstream bandwidth conditioning device
US8385219B2 (en) 2009-10-09 2013-02-26 John Mezzalingua Associates, Inc. Upstream bandwidth level measurement device
US10284162B2 (en) 2010-02-01 2019-05-07 Ppc Broadband, Inc. Multipath mitigation circuit for home network
US11444592B2 (en) 2010-02-01 2022-09-13 Ppc Broadband, Inc. Filter circuit
US9979373B2 (en) 2010-02-01 2018-05-22 Ppc Broadband, Inc. Multipath mitigation circuit for home network
US10790793B2 (en) 2010-02-01 2020-09-29 Ppc Broadband, Inc. Filter circuit
US9306530B2 (en) 2010-02-01 2016-04-05 Ppc Broadband, Inc. Multipath mitigation circuit for home network
US10021343B2 (en) 2010-12-21 2018-07-10 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
US10750120B2 (en) 2010-12-21 2020-08-18 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
US11070766B2 (en) 2010-12-21 2021-07-20 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
US9264012B2 (en) 2012-06-25 2016-02-16 Ppc Broadband, Inc. Radio frequency signal splitter
US9641147B2 (en) 2012-06-25 2017-05-02 Ppc Broadband, Inc. Radio frequency signal splitter
US9929457B2 (en) 2012-06-25 2018-03-27 Ppc Broadband, Inc. Radio frequency signal splitter
US10582160B2 (en) 2016-06-30 2020-03-03 Ppc Broadband, Inc. MoCA entry device
US11076129B2 (en) 2016-06-30 2021-07-27 Ppc Broadband, Inc. MoCA entry device
US11647162B2 (en) 2016-06-30 2023-05-09 Ppc Broadband, Inc. MoCA entry device
US10212392B2 (en) 2016-06-30 2019-02-19 Ppc Broadband, Inc. Passive enhanced MoCA entry device
US11076191B2 (en) 2018-01-19 2021-07-27 Ppc Broadband, Inc. Systems and methods for extending an in-home splitter network

Also Published As

Publication number Publication date
JPS6151839B2 (enrdf_load_stackoverflow) 1986-11-11

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