FR2072054B1 - - Google Patents

Info

Publication number
FR2072054B1
FR2072054B1 FR707046459A FR7046459A FR2072054B1 FR 2072054 B1 FR2072054 B1 FR 2072054B1 FR 707046459 A FR707046459 A FR 707046459A FR 7046459 A FR7046459 A FR 7046459A FR 2072054 B1 FR2072054 B1 FR 2072054B1
Authority
FR
France
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
FR707046459A
Other versions
FR2072054A1 (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.)
FANTRON CORP
Original Assignee
FANTRON CORP
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
Priority claimed from US887971A external-priority patent/US3649770A/en
Application filed by FANTRON CORP filed Critical FANTRON CORP
Publication of FR2072054A1 publication Critical patent/FR2072054A1/fr
Application granted granted Critical
Publication of FR2072054B1 publication Critical patent/FR2072054B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
    • H04W88/188—Selective call encoders for paging networks, e.g. paging centre devices using frequency address codes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/12—Electric signal transmission systems in which the signal transmitted is frequency or phase of AC
    • G08C19/14—Electric signal transmission systems in which the signal transmitted is frequency or phase of AC using combination of fixed frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Filters And Equalizers (AREA)
FR707046459A 1969-12-24 1970-12-23 Expired FR2072054B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US887971A US3649770A (en) 1969-12-24 Tone signaling system

Publications (2)

Publication Number Publication Date
FR2072054A1 FR2072054A1 (fr) 1971-09-24
FR2072054B1 true FR2072054B1 (fr) 1973-02-02

Family

ID=25392253

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707046459A Expired FR2072054B1 (fr) 1969-12-24 1970-12-23

Country Status (8)

Country Link
BE (1) BE760766A (fr)
CA (1) CA928818A (fr)
DE (1) DE2062957A1 (fr)
ES (1) ES386797A1 (fr)
FR (1) FR2072054B1 (fr)
GB (1) GB1328665A (fr)
NL (1) NL7018746A (fr)
ZA (1) ZA708418B (fr)

Also Published As

Publication number Publication date
CA928818A (en) 1973-06-19
GB1328665A (en) 1973-08-30
ES386797A1 (es) 1973-04-01
BE760766A (fr) 1971-05-27
DE2062957A1 (de) 1971-07-08
FR2072054A1 (fr) 1971-09-24
ZA708418B (en) 1972-07-26
NL7018746A (fr) 1971-06-28

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Legal Events

Date Code Title Description
ST Notification of lapse