FR2280280A2 - Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes - Google Patents

Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes

Info

Publication number
FR2280280A2
FR2280280A2 FR7426018A FR7426018A FR2280280A2 FR 2280280 A2 FR2280280 A2 FR 2280280A2 FR 7426018 A FR7426018 A FR 7426018A FR 7426018 A FR7426018 A FR 7426018A FR 2280280 A2 FR2280280 A2 FR 2280280A2
Authority
FR
France
Prior art keywords
relays
calibration
signals
deallocation
line
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
FR7426018A
Other languages
English (en)
French (fr)
Other versions
FR2280280B2 (https=
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7426018A priority Critical patent/FR2280280A2/fr
Publication of FR2280280A2 publication Critical patent/FR2280280A2/fr
Application granted granted Critical
Publication of FR2280280B2 publication Critical patent/FR2280280B2/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • H04Q5/06—Signalling by amplitude or polarity of DC

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7426018A 1974-07-26 1974-07-26 Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes Granted FR2280280A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7426018A FR2280280A2 (fr) 1974-07-26 1974-07-26 Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7426018A FR2280280A2 (fr) 1974-07-26 1974-07-26 Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes

Publications (2)

Publication Number Publication Date
FR2280280A2 true FR2280280A2 (fr) 1976-02-20
FR2280280B2 FR2280280B2 (https=) 1979-08-03

Family

ID=9141750

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426018A Granted FR2280280A2 (fr) 1974-07-26 1974-07-26 Dispositif d'appels selectifs pour installations telephoniques raccordees par des circuits de conversation non alimentes

Country Status (1)

Country Link
FR (1) FR2280280A2 (https=)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FR2280280B2 (https=) 1979-08-03

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