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FR858561A - Call transmission device in carrier frequency installations - Google Patents

Call transmission device in carrier frequency installations

Info

Publication number
FR858561A
FR858561A FR858561DA FR858561A FR 858561 A FR858561 A FR 858561A FR 858561D A FR858561D A FR 858561DA FR 858561 A FR858561 A FR 858561A
Authority
FR
France
Prior art keywords
transmission device
carrier frequency
call transmission
frequency installations
installations
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.)
Expired
Application number
Other languages
French (fr)
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR858561A publication Critical patent/FR858561A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J1/00Frequency-division multiplex systems
    • H04J1/02Details
    • H04J1/14Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR858561D 1938-08-05 1939-08-01 Call transmission device in carrier frequency installations Expired FR858561A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL5395D DE865327C (en) 1938-08-05 1938-08-05 Arrangement for call transmission in carrier frequency systems
DEL95350D DE744288C (en) 1938-08-05 1938-08-05 Procedure for transferring calls in carrier frequency systems

Publications (1)

Publication Number Publication Date
FR858561A true FR858561A (en) 1940-11-30

Family

ID=5966306

Family Applications (3)

Application Number Title Priority Date Filing Date
FR858561D Expired FR858561A (en) 1938-08-05 1939-08-01 Call transmission device in carrier frequency installations
FR858562D Expired FR858562A (en) 1938-08-05 1939-08-01 Advanced call transmission device in carrier frequency installations
FR53610D Expired FR53610E (en) 1938-08-05 1944-05-08 Call transmission device in carrier frequency installations

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR858562D Expired FR858562A (en) 1938-08-05 1939-08-01 Advanced call transmission device in carrier frequency installations
FR53610D Expired FR53610E (en) 1938-08-05 1944-05-08 Call transmission device in carrier frequency installations

Country Status (5)

Country Link
BE (3) BE435783A (en)
CH (1) CH256353A (en)
DE (2) DE865327C (en)
FR (3) FR858561A (en)
NL (1) NL56365C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600226A (en) * 1947-04-29 1952-06-10 Hartford Nat Bank & Trust Co Device to minimize interference between dial impulses in a carrier system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB253697A (en) * 1925-05-20 1926-06-24 Western Electric Co Improvements in signalling (ringing) arrangements for carrier wave systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600226A (en) * 1947-04-29 1952-06-10 Hartford Nat Bank & Trust Co Device to minimize interference between dial impulses in a carrier system

Also Published As

Publication number Publication date
BE435782A (en) 1939-09-30
DE865327C (en) 1953-02-02
BE435783A (en) 1939-09-30
FR858562A (en) 1940-11-28
FR53610E (en) 1946-06-21
DE744288C (en) 1944-01-13
BE456171A (en) 1944-07-31
CH256353A (en) 1948-08-15
NL56365C (en) 1944-06-15

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