JPS55120294A - Route advance system for office outgoing call - Google Patents

Route advance system for office outgoing call

Info

Publication number
JPS55120294A
JPS55120294A JP2708179A JP2708179A JPS55120294A JP S55120294 A JPS55120294 A JP S55120294A JP 2708179 A JP2708179 A JP 2708179A JP 2708179 A JP2708179 A JP 2708179A JP S55120294 A JPS55120294 A JP S55120294A
Authority
JP
Japan
Prior art keywords
office
call
route
attendant board
outgoing call
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
JP2708179A
Other languages
Japanese (ja)
Inventor
Eiichi Sato
Tetsuo Sato
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 JP2708179A priority Critical patent/JPS55120294A/en
Publication of JPS55120294A publication Critical patent/JPS55120294A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To realize an efficient office outgoing-incoming call connection of an office trunk by making an advance of the route of an office outgoing call in an overflow state under the control of an attendant board. CONSTITUTION:Common controller M is provided with a circuit which exercises a supervision over the busy state of an office trunk, and attendant board ATT with a key which controls a route advance, so that when the number of busy office trunks exceeds a fixed number, a route advance of an office outgoing call from an extension subscriber will be made to attendant board operator's call connection (2). On judging that an attendant board operator is in an emergency, a connection between extension subscriber SUB and attendant board operator's call trunk ORT is made and a call is enabled via route (3).
JP2708179A 1979-03-08 1979-03-08 Route advance system for office outgoing call Pending JPS55120294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2708179A JPS55120294A (en) 1979-03-08 1979-03-08 Route advance system for office outgoing call

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2708179A JPS55120294A (en) 1979-03-08 1979-03-08 Route advance system for office outgoing call

Publications (1)

Publication Number Publication Date
JPS55120294A true JPS55120294A (en) 1980-09-16

Family

ID=12211120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2708179A Pending JPS55120294A (en) 1979-03-08 1979-03-08 Route advance system for office outgoing call

Country Status (1)

Country Link
JP (1) JPS55120294A (en)

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