NL6613954A - - Google Patents

Info

Publication number
NL6613954A
NL6613954A NL6613954A NL6613954A NL6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A NL 6613954 A NL6613954 A NL 6613954A
Authority
NL
Netherlands
Application number
NL6613954A
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
Publication of NL6613954A publication Critical patent/NL6613954A/xx

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
    • H04Q1/4535—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 with an additional signal transmitted for voice protection
NL6613954A 1965-10-06 1966-10-04 NL6613954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965ST024469 DE1265225B (en) 1965-10-06 1965-10-06 Method and circuit arrangement for the simultaneous transmission of control signals via other communication lines

Publications (1)

Publication Number Publication Date
NL6613954A true NL6613954A (en) 1967-04-07

Family

ID=7460138

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6613954A NL6613954A (en) 1965-10-06 1966-10-04

Country Status (3)

Country Link
DE (1) DE1265225B (en)
GB (1) GB1153455A (en)
NL (1) NL6613954A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418458A1 (en) * 1984-02-13 1985-11-21 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for exchanging switching signals between telephone switching systems interconnected as primary and secondary systems
DE3405013C2 (en) * 1984-02-13 1986-01-09 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for exchanging license plates between telephone exchanges connected as main and sub-systems
DE3411205C2 (en) * 1984-03-27 1986-12-11 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Procedure for exchanging license plates between telephone exchanges connected as main and sub-systems

Also Published As

Publication number Publication date
DE1265225B (en) 1968-04-04
GB1153455A (en) 1969-05-29

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