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JPS63237697A - Information communication system - Google Patents

Information communication system

Info

Publication number
JPS63237697A
JPS63237697A JP7213887A JP7213887A JPS63237697A JP S63237697 A JPS63237697 A JP S63237697A JP 7213887 A JP7213887 A JP 7213887A JP 7213887 A JP7213887 A JP 7213887A JP S63237697 A JPS63237697 A JP S63237697A
Authority
JP
Japan
Prior art keywords
time division
line
exchange
transmission line
local exchange
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
JP7213887A
Other versions
JP2635580B2 (en
Inventor
Hideo Haruyama
Mikinaga Itou
Hiroshi Kobayashi
Kazuyoshi Ozawa
Yoshihiro Saito
Eiichiro Shibuya
Original Assignee
Tokyo Electric Power Co Inc:The
Toshiba Corp
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 Tokyo Electric Power Co Inc:The, Toshiba Corp filed Critical Tokyo Electric Power Co Inc:The
Priority to JP62072138A priority Critical patent/JP2635580B2/en
Publication of JPS63237697A publication Critical patent/JPS63237697A/en
Application granted granted Critical
Publication of JP2635580B2 publication Critical patent/JP2635580B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Abstract

PURPOSE: To reduce the quantity of cables to be laid by directly connecting a time division multiplex communication line and a private line to a trunk exchange or a local exchange.
CONSTITUTION: The transmission line to which subscriber's apparatus 1 following a local exchange 5 are connected is constituted into a tree-shaped time division multiplex transmission line 2, and a time division controller 3 is provided with a function, which converts the format of a signal transmitted in the common line signal system and that transmitted in the individual line individual channel system to each other, to directly connect the tree-shaped time division multiplex transmission line 2 to a trunk exchange 4 or the local exchange 5. Simultaneously, another time division controller 5 is connected to the time division controller 3 through a private line 6 and another treeshaped time division multiplex transmission line 2 is accommodated in the time division controller 3 to directly connect the private line 6 to the trunk exchange 4 or the local exchange 5. Thus, the quantity of cables to be laid is minimized and a flexible service is possible.
COPYRIGHT: (C)1988,JPO&Japio
JP62072138A 1987-03-26 1987-03-26 Information and communication system Expired - Lifetime JP2635580B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62072138A JP2635580B2 (en) 1987-03-26 1987-03-26 Information and communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62072138A JP2635580B2 (en) 1987-03-26 1987-03-26 Information and communication system

Publications (2)

Publication Number Publication Date
JPS63237697A true JPS63237697A (en) 1988-10-04
JP2635580B2 JP2635580B2 (en) 1997-07-30

Family

ID=13480627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62072138A Expired - Lifetime JP2635580B2 (en) 1987-03-26 1987-03-26 Information and communication system

Country Status (1)

Country Link
JP (1) JP2635580B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253040A (en) * 1988-08-18 1990-02-22 Asahi Optical Co Ltd Lcd iluminator for camera
US5903592A (en) * 1996-04-18 1999-05-11 Fujitsu Limited Radio transmission system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915305A (en) * 1972-05-17 1974-02-09
JPS6230447A (en) * 1985-08-01 1987-02-09 Kokusai Denshin Denwa Co Ltd <Kdd> Extension communication system between isdn terminal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915305A (en) * 1972-05-17 1974-02-09
JPS6230447A (en) * 1985-08-01 1987-02-09 Kokusai Denshin Denwa Co Ltd <Kdd> Extension communication system between isdn terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253040A (en) * 1988-08-18 1990-02-22 Asahi Optical Co Ltd Lcd iluminator for camera
US5903592A (en) * 1996-04-18 1999-05-11 Fujitsu Limited Radio transmission system

Also Published As

Publication number Publication date
JP2635580B2 (en) 1997-07-30

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