JPS5642486A - Trunk device - Google Patents

Trunk device

Info

Publication number
JPS5642486A
JPS5642486A JP11734679A JP11734679A JPS5642486A JP S5642486 A JPS5642486 A JP S5642486A JP 11734679 A JP11734679 A JP 11734679A JP 11734679 A JP11734679 A JP 11734679A JP S5642486 A JPS5642486 A JP S5642486A
Authority
JP
Japan
Prior art keywords
selecting
conference
tone
sound
processor
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
JP11734679A
Other languages
Japanese (ja)
Other versions
JPS5920320B2 (en
Inventor
Tadahiko Kumashiro
Hitoshi Imagawa
Koichi Hasegawa
Susumu Obara
Toshio Shimoe
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 JP11734679A priority Critical patent/JPS5920320B2/en
Publication of JPS5642486A publication Critical patent/JPS5642486A/en
Publication of JPS5920320B2 publication Critical patent/JPS5920320B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To realize incoming service during a call, conference calling service, etc., with the same constitution by selecting and supplying one of signals including a sound on the basis of a command from a processor to a conference talking circuit and then by selecting and outputting it. CONSTITUTION:One of sound IN, dial tone DT and no-tone NT including an input signal from a time-division channel is selected by selecting circuit SEL-IN on the basis of control information from a processor and then supplied to conference talking circuits CF0 and CF1. Further, one of a selective input to them, the outputs of conference talking circuits and no-tone NT selected by selecting circuit SEL-OUT and outputted. As a result, the efficiency of the utilization of a highway is improved and a variety of services can be offered without lowering the multiplicity of a trunk unit.
JP11734679A 1979-09-14 1979-09-14 trunk device Expired JPS5920320B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11734679A JPS5920320B2 (en) 1979-09-14 1979-09-14 trunk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11734679A JPS5920320B2 (en) 1979-09-14 1979-09-14 trunk device

Publications (2)

Publication Number Publication Date
JPS5642486A true JPS5642486A (en) 1981-04-20
JPS5920320B2 JPS5920320B2 (en) 1984-05-12

Family

ID=14709417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11734679A Expired JPS5920320B2 (en) 1979-09-14 1979-09-14 trunk device

Country Status (1)

Country Link
JP (1) JPS5920320B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0723118A (en) * 1993-06-29 1995-01-24 Nec Corp Multi-party channel connection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0723118A (en) * 1993-06-29 1995-01-24 Nec Corp Multi-party channel connection system

Also Published As

Publication number Publication date
JPS5920320B2 (en) 1984-05-12

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