ES466777A1 - A circuit to track calls in a telephone system. (Machine-translation by Google Translate, not legally binding) - Google Patents

A circuit to track calls in a telephone system. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES466777A1
ES466777A1 ES466777A ES466777A ES466777A1 ES 466777 A1 ES466777 A1 ES 466777A1 ES 466777 A ES466777 A ES 466777A ES 466777 A ES466777 A ES 466777A ES 466777 A1 ES466777 A1 ES 466777A1
Authority
ES
Spain
Prior art keywords
translation
receiver
circuit
machine
legally binding
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
ES466777A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES466777A1 publication Critical patent/ES466777A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

A circuit for tracking calls in a telephone system with decentralized control of selectors and tracking units, characterized in that the call tracking unit (fe) is associated with a transmitter (s1) which, in the event of an input capture, transmits backward a speech frequency signal, because the first selection stage (i.gw) is associated with a device (ze) comprising a first receiver (el) for the speech frequency return signal, because this receiver ( el) when it responds, a second transmitter (s2) switches to transmit the local mesh code as well as the calling number of the calling party as ascertained in the course of an identification process, in the form of a voice frequency code by the conversation threads to the call tracking unit, and in that the call tracking unit contains a second receiver (e2) to receive these codes and numbers and transmit them to a mobile device; e storage (sp2) (memory). (Machine-translation by Google Translate, not legally binding)
ES466777A 1977-02-08 1978-02-08 A circuit to track calls in a telephone system. (Machine-translation by Google Translate, not legally binding) Expired ES466777A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772705137 DE2705137C2 (en) 1977-02-08 1977-02-08 Circuit arrangement for catching in a telephone system

Publications (1)

Publication Number Publication Date
ES466777A1 true ES466777A1 (en) 1978-10-01

Family

ID=6000590

Family Applications (1)

Application Number Title Priority Date Filing Date
ES466777A Expired ES466777A1 (en) 1977-02-08 1978-02-08 A circuit to track calls in a telephone system. (Machine-translation by Google Translate, not legally binding)

Country Status (3)

Country Link
DE (1) DE2705137C2 (en)
ES (1) ES466777A1 (en)
FR (1) FR2379951A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1148027B (en) * 1981-03-03 1986-11-26 Cselt Centro Studi Lab Telecom SYSTEM FOR THE PROPAGATION ALONG A TELEPHONE CONNECTION OF THE TEETH OF THE USERS INTERESTED IN THIS CONNECTION
CA1217550A (en) * 1981-10-02 1987-02-03 Jose P. Pintos Calling line tracing system and identification detector
BR8106464A (en) * 1981-10-02 1983-09-13 Sonintel Sociedade Nacional De TELEPHONE CALL DETECTOR
DE3326979A1 (en) * 1983-07-27 1985-02-07 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for telecommunications switching systems with direct dialling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239741B (en) * 1965-07-28 1967-05-03 Siemens Ag Circuit arrangement for telecommunications systems, especially telephone systems, with devices for automatic connection tracking
DE2657880A1 (en) * 1976-12-21 1978-06-22 Standard Elektrik Lorenz Ag Automatic telephone exchange with de-central control of selectors - has central device which interrogates selector position and determines route

Also Published As

Publication number Publication date
FR2379951B3 (en) 1980-10-10
FR2379951A1 (en) 1978-09-01
DE2705137A1 (en) 1978-08-10
DE2705137C2 (en) 1983-04-21

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991119