NL65711C - - Google Patents

Info

Publication number: NL65711C
Authority: NL; Netherlands

Application number

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.)

1939-04-26

Publication of NL65711C publication Critical patent/NL65711C/xx

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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- 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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier 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
- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)

NL65711D 1939-04-26 NL65711C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB2263139X		1939-04-26

Publications (1)

Publication Number	Publication Date
NL65711C true NL65711C (enrdf_load_html_response)

Family

ID=10902543

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL65711D NL65711C (enrdf_load_html_response)	1939-04-26

Country Status (4)

Country	Link
US (1)	US2263139A (enrdf_load_html_response)
BE (1)	BE466943A (enrdf_load_html_response)
FR (1)	FR931904A (enrdf_load_html_response)
NL (1)	NL65711C (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2596977A (en) *	1947-10-08	1952-05-20	Int Standard Electric Corp	Ringing equipment

0
- NL NL65711D patent/NL65711C/xx active
- BE BE466943D patent/BE466943A/xx unknown
1940
- 1940-03-05 US US322402A patent/US2263139A/en not_active Expired - Lifetime
1946
- 1946-08-02 FR FR931904D patent/FR931904A/fr not_active Expired

Also Published As

Publication number	Publication date
US2263139A (en)	1941-11-18
BE466943A (enrdf_load_html_response)
FR931904A (fr)	1948-03-08

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