JPS5588491A - Trunk circuit control system - Google Patents

Trunk circuit control system

Info

Publication number
JPS5588491A
JPS5588491A JP16355478A JP16355478A JPS5588491A JP S5588491 A JPS5588491 A JP S5588491A JP 16355478 A JP16355478 A JP 16355478A JP 16355478 A JP16355478 A JP 16355478A JP S5588491 A JPS5588491 A JP S5588491A
Authority
JP
Japan
Prior art keywords
signal
remote station
control information
relay
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
JP16355478A
Other languages
Japanese (ja)
Other versions
JPS6139796B2 (en
Inventor
Junji Asakura
Ryoichi Okada
Shiro Enami
Takehiko Dai
Michio Takahashi
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP16355478A priority Critical patent/JPS5588491A/en
Publication of JPS5588491A publication Critical patent/JPS5588491A/en
Publication of JPS6139796B2 publication Critical patent/JPS6139796B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To omit the identification for the types of trunk circuits by securing the control to the trunk of the loop signal system with the control information of the SS/SR signal system and then converting the information into the signals of the loop signal system. CONSTITUTION:The start signal sent from the remote station unit of the loop signal system is received at relay A and then displayed to the central control unit via contact a<0>. Relay S operates via contact a<1> and then sends the start end signal back to the remote station via contacts s<0>. The central control unit delivers the control information when the reception is ready for signal KP. After reception of signal KP, the control information is made off. In this case, the normal signal is transmitted to the remote station via contacts t<0> and t<1> of relay T. According to the reply of the called subscriber, the central control unit transmits the replay signal. In this case, the control information is made on. In this way, the replay signal formed with the reverse signal is transmitted to the remote station via contacts t<0> and t<1>.
JP16355478A 1978-12-25 1978-12-25 Trunk circuit control system Granted JPS5588491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16355478A JPS5588491A (en) 1978-12-25 1978-12-25 Trunk circuit control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16355478A JPS5588491A (en) 1978-12-25 1978-12-25 Trunk circuit control system

Publications (2)

Publication Number Publication Date
JPS5588491A true JPS5588491A (en) 1980-07-04
JPS6139796B2 JPS6139796B2 (en) 1986-09-05

Family

ID=15776094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16355478A Granted JPS5588491A (en) 1978-12-25 1978-12-25 Trunk circuit control system

Country Status (1)

Country Link
JP (1) JPS5588491A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396190A (en) * 1989-09-08 1991-04-22 Nec Corp Relay line device
JPH0396191A (en) * 1989-09-08 1991-04-22 Nec Corp Relay line device
JPH0682534U (en) * 1993-04-30 1994-11-25 株式会社インダック Gas level alarm device for pressure cylinder for draft beer
US5875244A (en) * 1994-03-18 1999-02-23 Fujitsu Limited Transmission apparatus for relaying different types of trunk signals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396190A (en) * 1989-09-08 1991-04-22 Nec Corp Relay line device
JPH0396191A (en) * 1989-09-08 1991-04-22 Nec Corp Relay line device
JP3232354B2 (en) * 1989-09-08 2001-11-26 エヌイーシーインフロンティア株式会社 Trunk line device
JPH0682534U (en) * 1993-04-30 1994-11-25 株式会社インダック Gas level alarm device for pressure cylinder for draft beer
US5875244A (en) * 1994-03-18 1999-02-23 Fujitsu Limited Transmission apparatus for relaying different types of trunk signals

Also Published As

Publication number Publication date
JPS6139796B2 (en) 1986-09-05

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