JPS6430393A - Public network detouring system for exchange relay line - Google Patents

Public network detouring system for exchange relay line

Info

Publication number
JPS6430393A
JPS6430393A JP18538887A JP18538887A JPS6430393A JP S6430393 A JPS6430393 A JP S6430393A JP 18538887 A JP18538887 A JP 18538887A JP 18538887 A JP18538887 A JP 18538887A JP S6430393 A JPS6430393 A JP S6430393A
Authority
JP
Japan
Prior art keywords
relay line
public network
line
time
automatically
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.)
Pending
Application number
JP18538887A
Other languages
Japanese (ja)
Inventor
Hideki Niwaya
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 JP18538887A priority Critical patent/JPS6430393A/en
Publication of JPS6430393A publication Critical patent/JPS6430393A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To prevent a relay line from becoming busy even when calls exceeding the capacity is generated by using a public telephone circuit as a relay line for an exchange at the time of abnormal convergence. CONSTITUTION:A means to automatically outgoing through a public network 14 when the relay line 13 is busy and means 9, 10 to automatically transfer an extension number are provided. Thus, at a time when the convergence occurs to the relay line 13 between exchanges 1, 2 consisting of such as an exclusive line 13, a call is automatically originated to the public network 14 to set up the relay line. By using the public circuit 14 as the relay line between the exchanges 1, 2 at the time of the abnormal convergence, the number of call loss can be decreased without enhancing the capacity of the exclusive line 13 requiring a fixed cost.
JP18538887A 1987-07-27 1987-07-27 Public network detouring system for exchange relay line Pending JPS6430393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18538887A JPS6430393A (en) 1987-07-27 1987-07-27 Public network detouring system for exchange relay line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18538887A JPS6430393A (en) 1987-07-27 1987-07-27 Public network detouring system for exchange relay line

Publications (1)

Publication Number Publication Date
JPS6430393A true JPS6430393A (en) 1989-02-01

Family

ID=16169936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18538887A Pending JPS6430393A (en) 1987-07-27 1987-07-27 Public network detouring system for exchange relay line

Country Status (1)

Country Link
JP (1) JPS6430393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02311065A (en) * 1989-05-17 1990-12-26 Northern Telecom Ltd Independent career circuit service system
EP0717572A2 (en) 1994-12-14 1996-06-19 Nec Corporation Alternative route selection in inter-exchange networks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02311065A (en) * 1989-05-17 1990-12-26 Northern Telecom Ltd Independent career circuit service system
EP0717572A2 (en) 1994-12-14 1996-06-19 Nec Corporation Alternative route selection in inter-exchange networks

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