GB1153455A - Telecommunication Channel Control Arrangement - Google Patents

Telecommunication Channel Control Arrangement

Info

Publication number
GB1153455A
GB1153455A GB4382366A GB4382366A GB1153455A GB 1153455 A GB1153455 A GB 1153455A GB 4382366 A GB4382366 A GB 4382366A GB 4382366 A GB4382366 A GB 4382366A GB 1153455 A GB1153455 A GB 1153455A
Authority
GB
United Kingdom
Prior art keywords
signals
prepare
fault
receiver
resonant circuits
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
GB4382366A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1153455A publication Critical patent/GB1153455A/en
Expired 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
    • 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

Abstract

1,153,455. Voice frequency signalling. INTERNATIONAL STANDARD ELECTRIC CORP. 30 Sept., 1966 [6 Oct., 1965], No. 43823/66. Headings H4K and H4R. In an exchange system wherein it is necessary to transmit fault-indication-data via a busy line, the data transmitter S initially sends a V.F. " prepare " signal which readies a V.F. receiver E2 and causes resonant circuits F, tuned to the V.F. signals, to be inserted into the line so as to prevent spurious signals from affecting the receiver and thereafter sends one or more U.F. signals indicative of the nature of the fault. Relays SP1 and SP2 respond to the prepare signal so as to connect up the resonant circuits, an alternative form of which, using a three-winding transformer, is depicted in Fig. 2 (not shown). The prepare and fault signals are of the same frequency but differ in their duration.
GB4382366A 1965-10-06 1966-09-30 Telecommunication Channel Control Arrangement Expired GB1153455A (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
GB1153455A true GB1153455A (en) 1969-05-29

Family

ID=7460138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4382366A Expired GB1153455A (en) 1965-10-06 1966-09-30 Telecommunication Channel Control Arrangement

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
NL6613954A (en) 1967-04-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees