FR822481A - Telephone signaling system - Google Patents

Telephone signaling system

Info

Publication number
FR822481A
FR822481A FR822481DA FR822481A FR 822481 A FR822481 A FR 822481A FR 822481D A FR822481D A FR 822481DA FR 822481 A FR822481 A FR 822481A
Authority
FR
France
Prior art keywords
signaling system
telephone signaling
telephone
signaling
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT 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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR822481A publication Critical patent/FR822481A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
FR822481D 1936-06-01 1937-05-31 Telephone signaling system Expired FR822481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82848A US2117835A (en) 1936-06-01 1936-06-01 Telephone signaling system

Publications (1)

Publication Number Publication Date
FR822481A true FR822481A (en) 1937-12-30

Family

ID=22173828

Family Applications (1)

Application Number Title Priority Date Filing Date
FR822481D Expired FR822481A (en) 1936-06-01 1937-05-31 Telephone signaling system

Country Status (2)

Country Link
US (1) US2117835A (en)
FR (1) FR822481A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL68563C (en) * 1946-06-15

Also Published As

Publication number Publication date
US2117835A (en) 1938-05-17

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