DE2202229A1 - - Google Patents

Info

Publication number
DE2202229A1
DE2202229A1 DE19722202229 DE2202229A DE2202229A1 DE 2202229 A1 DE2202229 A1 DE 2202229A1 DE 19722202229 DE19722202229 DE 19722202229 DE 2202229 A DE2202229 A DE 2202229A DE 2202229 A1 DE2202229 A1 DE 2202229A1
Authority
DE
Germany
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
DE19722202229
Other languages
German (de)
Other versions
DE2202229B2 (de
DE2202229C2 (enrdf_load_stackoverflow
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 filed Critical
Priority to DE19722202229 priority Critical patent/DE2202229B2/de
Publication of DE2202229B2 publication Critical patent/DE2202229B2/de
Publication of DE2202229A1 publication Critical patent/DE2202229A1/de
Priority to IT1928773A priority patent/IT978218B/it
Application granted granted Critical
Publication of DE2202229C2 publication Critical patent/DE2202229C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
DE19722202229 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen Granted DE2202229B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19722202229 DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen
IT1928773A IT978218B (it) 1972-01-18 1973-01-17 Disposizione circuitale per rice vitori di piu frequenze a guadagno regolato in impianti di telecomuni cazioni specie in impianti telefo nici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722202229 DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen

Publications (3)

Publication Number Publication Date
DE2202229B2 DE2202229B2 (de) 1972-09-21
DE2202229A1 true DE2202229A1 (enrdf_load_stackoverflow) 1972-09-21
DE2202229C2 DE2202229C2 (enrdf_load_stackoverflow) 1975-07-03

Family

ID=5833314

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722202229 Granted DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen

Country Status (2)

Country Link
DE (1) DE2202229B2 (enrdf_load_stackoverflow)
IT (1) IT978218B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus

Also Published As

Publication number Publication date
IT978218B (it) 1974-09-20
DE2202229B2 (de) 1972-09-21
DE2202229C2 (enrdf_load_stackoverflow) 1975-07-03

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee