JPS5778294A - Trunk line outgoing call eariler dial restriction system - Google Patents

Trunk line outgoing call eariler dial restriction system

Info

Publication number
JPS5778294A
JPS5778294A JP15319680A JP15319680A JPS5778294A JP S5778294 A JPS5778294 A JP S5778294A JP 15319680 A JP15319680 A JP 15319680A JP 15319680 A JP15319680 A JP 15319680A JP S5778294 A JPS5778294 A JP S5778294A
Authority
JP
Japan
Prior art keywords
trunk line
extension
trunk
calling
related station
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
JP15319680A
Other languages
English (en)
Other versions
JPS6232677B2 (ja
Inventor
Yasutaka Kondo
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 JP15319680A priority Critical patent/JPS5778294A/ja
Publication of JPS5778294A publication Critical patent/JPS5778294A/ja
Publication of JPS6232677B2 publication Critical patent/JPS6232677B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP15319680A 1980-10-31 1980-10-31 Trunk line outgoing call eariler dial restriction system Granted JPS5778294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15319680A JPS5778294A (en) 1980-10-31 1980-10-31 Trunk line outgoing call eariler dial restriction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15319680A JPS5778294A (en) 1980-10-31 1980-10-31 Trunk line outgoing call eariler dial restriction system

Publications (2)

Publication Number Publication Date
JPS5778294A true JPS5778294A (en) 1982-05-15
JPS6232677B2 JPS6232677B2 (ja) 1987-07-16

Family

ID=15557136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15319680A Granted JPS5778294A (en) 1980-10-31 1980-10-31 Trunk line outgoing call eariler dial restriction system

Country Status (1)

Country Link
JP (1) JPS5778294A (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264205A (en) * 1975-11-21 1977-05-27 Fujitsu Ltd Mis-connection preventing system by early-time dialing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264205A (en) * 1975-11-21 1977-05-27 Fujitsu Ltd Mis-connection preventing system by early-time dialing

Also Published As

Publication number Publication date
JPS6232677B2 (ja) 1987-07-16

Similar Documents

Publication Publication Date Title
JPS5778294A (en) Trunk line outgoing call eariler dial restriction system
GB1059535A (en) Intercommunication system with voice-frequency key dialling
JPS56111366A (en) Absence transfer system
GB1084099A (ja)
GB1061162A (en) Improvements in or relating to p.a.b.x. telephone systems
JPS57192158A (en) Adaptor for telephone set
JPS5776990A (en) Restriction system for earlier dialing of trunk line call
JPS5547763A (en) Electronic call meter unit
JPS5444406A (en) Relay system for selection signal
JPS55136786A (en) Toll call control system
JPS5492103A (en) Malicious preventing method
GB1077478A (en) Improvements in or relating to telecommunications systems subscriber's sets
JPS5672562A (en) Communication equipment
JPS51144503A (en) Telephone set
JPS57131192A (en) Private branch exchange
JPS532011A (en) Calling signal and calling tone transmitting at telephone exchange
JPS5776963A (en) Teset use sender system
JPS5750163A (en) Call pickup system
JPS54133807A (en) Register of automatic telephone switchboard
JPS5630386A (en) Toll call connection control system
JPS5658358A (en) Charging system for night direct call telephone
JPS5733882A (en) Push button register sender system
GB732178A (en) Party-line metering in automatic telephone exchange systems
JPS5481006A (en) Call system of main line abbreviation dial
JPS5459806A (en) Pb dial receiving system