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JPS645153A - Private line connection system - Google Patents

Private line connection system

Info

Publication number
JPS645153A
JPS645153A JP16062387A JP16062387A JPS645153A JP S645153 A JPS645153 A JP S645153A JP 16062387 A JP16062387 A JP 16062387A JP 16062387 A JP16062387 A JP 16062387A JP S645153 A JPS645153 A JP S645153A
Authority
JP
Japan
Prior art keywords
pabxs
private
common
pabx
public 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
JP16062387A
Other languages
Japanese (ja)
Other versions
JP2551007B2 (en
Inventor
Masaji Shinya
Keiji Matsushita
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
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 filed Critical NEC Corp
Priority to JP62160623A priority Critical patent/JP2551007B2/en
Publication of JPS645153A publication Critical patent/JPS645153A/en
Application granted granted Critical
Publication of JP2551007B2 publication Critical patent/JP2551007B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To prevent a delay in communication by connecting a common line signal equipment to one of B channels connected to an opposite PABX via a public exchange of a public exchange network as a private common signal line to transfer and receive control information of a call mainly between PABXs directly. CONSTITUTION:A private automatic branch exchange (PABX) 10 connects one of B channels 31 used mainly for communication information transmission between terminal equipments to a designated opposite PABX 10 via a public exchange network 20 and connects the common line signal equipment 12 to the B channel 31 to form a private common signal line 33, and call control information is received/transmitted directly between the PABXs. That is, at least one of the B channels 31 is used as the private line for a consecutive call between the PABXs 10, the control between the PABXs 10 is executed by the common line signal system No.7 and the signal between the PABXs 10 passes through a public exchange without any processing. Thus, the delay in the communication is prevented.
JP62160623A 1987-06-26 1987-06-26 Dedicated line connection method Expired - Lifetime JP2551007B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62160623A JP2551007B2 (en) 1987-06-26 1987-06-26 Dedicated line connection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62160623A JP2551007B2 (en) 1987-06-26 1987-06-26 Dedicated line connection method

Publications (2)

Publication Number Publication Date
JPS645153A true JPS645153A (en) 1989-01-10
JP2551007B2 JP2551007B2 (en) 1996-11-06

Family

ID=15718936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62160623A Expired - Lifetime JP2551007B2 (en) 1987-06-26 1987-06-26 Dedicated line connection method

Country Status (1)

Country Link
JP (1) JP2551007B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138849A (en) * 1987-11-26 1989-05-31 Hitachi Ltd Relay line connection control system
JPH03182149A (en) * 1989-11-29 1991-08-08 American Teleph & Telegr Co <Att> System and method of communication
JPH03235566A (en) * 1990-02-13 1991-10-21 Matsushita Electric Ind Co Ltd Common line signal transmitter-receiver
JPH0451647A (en) * 1990-06-19 1992-02-20 Nec Corp Private line setting system
JPH04296146A (en) * 1990-12-31 1992-10-20 American Teleph & Telegr Co <Att> Apparatus and method for forming virtual link and switching system thereof
JPH04304754A (en) * 1990-12-31 1992-10-28 American Teleph & Telegr Co <Att> Apparatus and method for forming virtual link
US6816587B1 (en) 1999-07-01 2004-11-09 Nec Corporation Virtual private line connection system and method
US8651170B2 (en) 2008-08-25 2014-02-18 Denso Corporation Exhaust gas heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138849A (en) * 1987-11-26 1989-05-31 Hitachi Ltd Relay line connection control system
JPH03182149A (en) * 1989-11-29 1991-08-08 American Teleph & Telegr Co <Att> System and method of communication
JPH03235566A (en) * 1990-02-13 1991-10-21 Matsushita Electric Ind Co Ltd Common line signal transmitter-receiver
JPH0451647A (en) * 1990-06-19 1992-02-20 Nec Corp Private line setting system
JPH04296146A (en) * 1990-12-31 1992-10-20 American Teleph & Telegr Co <Att> Apparatus and method for forming virtual link and switching system thereof
JPH04304754A (en) * 1990-12-31 1992-10-28 American Teleph & Telegr Co <Att> Apparatus and method for forming virtual link
US6816587B1 (en) 1999-07-01 2004-11-09 Nec Corporation Virtual private line connection system and method
US8651170B2 (en) 2008-08-25 2014-02-18 Denso Corporation Exhaust gas heat exchanger

Also Published As

Publication number Publication date
JP2551007B2 (en) 1996-11-06

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Legal Events

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EXPY Cancellation because of completion of term