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FR2345023A1 - TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER - Google Patents

TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER

Info

Publication number
FR2345023A1
FR2345023A1 FR7607447A FR7607447A FR2345023A1 FR 2345023 A1 FR2345023 A1 FR 2345023A1 FR 7607447 A FR7607447 A FR 7607447A FR 7607447 A FR7607447 A FR 7607447A FR 2345023 A1 FR2345023 A1 FR 2345023A1
Authority
FR
France
Prior art keywords
switching center
verification device
tone verification
mic switching
mic
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
FR7607447A
Other languages
French (fr)
Other versions
FR2345023B1 (en
Inventor
Augustin Lejay
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7607447A priority Critical patent/FR2345023A1/en
Priority to GB736177A priority patent/GB1520233A/en
Priority to DE19772710954 priority patent/DE2710954C2/en
Priority to ES456900A priority patent/ES456900A1/en
Priority to BE2055739A priority patent/BE852497A/en
Priority to CH319577A priority patent/CH620560A5/en
Publication of FR2345023A1 publication Critical patent/FR2345023A1/en
Application granted granted Critical
Publication of FR2345023B1 publication Critical patent/FR2345023B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
    • 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)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7607447A 1976-03-16 1976-03-16 TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER Granted FR2345023A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7607447A FR2345023A1 (en) 1976-03-16 1976-03-16 TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER
GB736177A GB1520233A (en) 1976-03-16 1977-02-22 Tone checking device for a pcm exchange
DE19772710954 DE2710954C2 (en) 1976-03-16 1977-03-12 Test device for audio signals from a PCM exchange
ES456900A ES456900A1 (en) 1976-03-16 1977-03-16 Tone checking device for a pcm exchange
BE2055739A BE852497A (en) 1976-03-16 1977-03-16 TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER
CH319577A CH620560A5 (en) 1976-03-16 1977-03-16 Arrangement for monitoring tones in an exchange operated using pulse code modulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7607447A FR2345023A1 (en) 1976-03-16 1976-03-16 TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER

Publications (2)

Publication Number Publication Date
FR2345023A1 true FR2345023A1 (en) 1977-10-14
FR2345023B1 FR2345023B1 (en) 1981-09-04

Family

ID=9170457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607447A Granted FR2345023A1 (en) 1976-03-16 1976-03-16 TONE VERIFICATION DEVICE IN A MIC SWITCHING CENTER

Country Status (6)

Country Link
BE (1) BE852497A (en)
CH (1) CH620560A5 (en)
DE (1) DE2710954C2 (en)
ES (1) ES456900A1 (en)
FR (1) FR2345023A1 (en)
GB (1) GB1520233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032365A1 (en) * 1980-01-09 1981-07-22 COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: Supervision device for a digital signal generator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116576A1 (en) * 1981-04-27 1982-11-18 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Method for operating a digital audible tone generator
DE3229438A1 (en) * 1982-08-06 1984-02-09 Siemens AG, 1000 Berlin und 8000 München Method for monitoring a digital AF generator
DE3325290A1 (en) * 1983-07-13 1985-01-24 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for blocking voice information supplied by a subscriber station of a digital time-division multiplex telephone switching system in the outgoing direction of transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NO009730/75 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032365A1 (en) * 1980-01-09 1981-07-22 COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: Supervision device for a digital signal generator
FR2474785A1 (en) * 1980-01-09 1981-07-31 Cit Alcatel DEVICE FOR CONTROLLING A DIGITAL SIGNAL GENERATOR

Also Published As

Publication number Publication date
DE2710954C2 (en) 1984-05-30
ES456900A1 (en) 1978-02-16
FR2345023B1 (en) 1981-09-04
DE2710954A1 (en) 1977-09-29
BE852497A (en) 1977-09-16
GB1520233A (en) 1978-08-02
CH620560A5 (en) 1980-11-28

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Legal Events

Date Code Title Description
ST Notification of lapse