JPS52149012A - Dial pulse repeating system for pcm telephone exchange - Google Patents

Dial pulse repeating system for pcm telephone exchange

Info

Publication number
JPS52149012A
JPS52149012A JP6450676A JP6450676A JPS52149012A JP S52149012 A JPS52149012 A JP S52149012A JP 6450676 A JP6450676 A JP 6450676A JP 6450676 A JP6450676 A JP 6450676A JP S52149012 A JPS52149012 A JP S52149012A
Authority
JP
Japan
Prior art keywords
dial pulse
telephone exchange
repeating system
pulse repeating
pcm telephone
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
JP6450676A
Other languages
Japanese (ja)
Inventor
Kaoru Tokunaga
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6450676A priority Critical patent/JPS52149012A/en
Publication of JPS52149012A publication Critical patent/JPS52149012A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To use one of the two codes with which the same output analog level is obtained is used for the dial pulse signal code and the other for the aural signal code when using PCM code system of mid-tread type, and thus to prevent deterioration of the call quality.
JP6450676A 1976-06-04 1976-06-04 Dial pulse repeating system for pcm telephone exchange Pending JPS52149012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6450676A JPS52149012A (en) 1976-06-04 1976-06-04 Dial pulse repeating system for pcm telephone exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6450676A JPS52149012A (en) 1976-06-04 1976-06-04 Dial pulse repeating system for pcm telephone exchange

Publications (1)

Publication Number Publication Date
JPS52149012A true JPS52149012A (en) 1977-12-10

Family

ID=13260145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6450676A Pending JPS52149012A (en) 1976-06-04 1976-06-04 Dial pulse repeating system for pcm telephone exchange

Country Status (1)

Country Link
JP (1) JPS52149012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62222758A (en) * 1986-03-20 1987-09-30 Fujitsu Ltd Relay system for digital relay line signal equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62222758A (en) * 1986-03-20 1987-09-30 Fujitsu Ltd Relay system for digital relay line signal equipment

Similar Documents

Publication Publication Date Title
NO160303C (en) POLYMERIZING CATALYST, CATALYST COMPONENT FOR THE PREPARATION OF THE CATALYST AND THE USE OF THE CATALYST.
CA1025127A (en) Pcm tone receiver using optimum statistical technique
AU2239083A (en) Wireless telephone system with high level dial pulse signalling
JPS52149012A (en) Dial pulse repeating system for pcm telephone exchange
JPS54145415A (en) Hybrid terminal equipment
JPS5313806A (en) Telephone extension system
JPS5283102A (en) Abbreviated dialing unit
JPS53110305A (en) Telephone set
JPS5234601A (en) Calling circuit
JPS5286709A (en) Companding estimate code decoding circuit
JPS53904A (en) Digital code conversion device
JPS542602A (en) Automatic answering telephone set
JPS5378103A (en) Telephone recorder
JPS5248413A (en) Analog signal receiving system
JPS5317207A (en) Howler outgoing system
JPS53135206A (en) Telephone repeating system
JPS53903A (en) Digital code conversion device
JPS5278339A (en) Digital filter
JPS51144504A (en) Telephone set
JPS5290206A (en) Shortened dial service system
JPS51123004A (en) Push-button dialing telephone circuit
JPS5319703A (en) Simultaneous call and its unit
JPS547218A (en) Pcm receiving system
JPS5370701A (en) Individual selection call receiver
JPS53145548A (en) Pcm encorder