[go: up one dir, main page]

ES8302988A1 - Improvements in the call circuits by push button with pulse signaling for telephone appliances. (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements in the call circuits by push button with pulse signaling for telephone appliances. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES8302988A1
ES8302988A1 ES508516A ES508516A ES8302988A1 ES 8302988 A1 ES8302988 A1 ES 8302988A1 ES 508516 A ES508516 A ES 508516A ES 508516 A ES508516 A ES 508516A ES 8302988 A1 ES8302988 A1 ES 8302988A1
Authority
ES
Spain
Prior art keywords
translation
machine
legally binding
google translate
telephone
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
ES508516A
Other languages
Spanish (es)
Other versions
ES508516A0 (en
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.)
Telefonica SA
Original Assignee
Telefonica Nacional de 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 Telefonica Nacional de Espana SA filed Critical Telefonica Nacional de Espana SA
Priority to ES508516A priority Critical patent/ES508516A0/en
Publication of ES8302988A1 publication Critical patent/ES8302988A1/en
Publication of ES508516A0 publication Critical patent/ES508516A0/en
Granted legal-status Critical Current

Links

Landscapes

  • Machine Translation (AREA)
  • Electrotherapy Devices (AREA)

Abstract

Call device by push-button with pulse signaling for telephone appliances. Fundamentally constituted by: a protective circuit (cp) that ensures the correct polarization of the device and prevents it from being damaged by overvoltages in the telephone line, connected at its terminals (l1 and l2); conversation telephone circuit (cc) of the device; keyboard unit (bot) actionable by the user of the appliance; and integrated circuit (ci) that provides the signs in charge of controlling the marking. (Machine-translation by Google Translate, not legally binding)
ES508516A 1982-01-04 1982-01-04 IMPROVEMENTS IN PUSH-BUTTON CALLING CIRCUITS WITH PULSE SIGNALING FOR TELEPHONE DEVICES. Granted ES508516A0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES508516A ES508516A0 (en) 1982-01-04 1982-01-04 IMPROVEMENTS IN PUSH-BUTTON CALLING CIRCUITS WITH PULSE SIGNALING FOR TELEPHONE DEVICES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES508516A ES508516A0 (en) 1982-01-04 1982-01-04 IMPROVEMENTS IN PUSH-BUTTON CALLING CIRCUITS WITH PULSE SIGNALING FOR TELEPHONE DEVICES.

Publications (2)

Publication Number Publication Date
ES8302988A1 true ES8302988A1 (en) 1983-02-01
ES508516A0 ES508516A0 (en) 1983-02-01

Family

ID=8483457

Family Applications (1)

Application Number Title Priority Date Filing Date
ES508516A Granted ES508516A0 (en) 1982-01-04 1982-01-04 IMPROVEMENTS IN PUSH-BUTTON CALLING CIRCUITS WITH PULSE SIGNALING FOR TELEPHONE DEVICES.

Country Status (1)

Country Link
ES (1) ES508516A0 (en)

Also Published As

Publication number Publication date
ES508516A0 (en) 1983-02-01

Similar Documents

Publication Publication Date Title
JPS54136166A (en) Semiconductor switch and telephone subscriber*s line circuit
JPS5354402A (en) Circuit for setting subscriber*s key telephone set
GB1514662A (en) Protection device for a subscriber's telephone set
EP0067268A3 (en) Hook flash actuated telephone control device
ES467492A1 (en) Telephone line feeding circuit including a protective device
SE7500362L (en) ELECTRONIC NUMBER PULSE SENSOR FOR TELEPHONE DEVICE.
IT1216909B (en) SO-CALLED SWITCHING VOLTAGE REGULATOR FOR AN INTERFACE CIRCUIT OF A USER TELEPHONE LINE.
SE8003907L (en) ELECTRONIC KEYBOARD INTERFACE FOR A PHONE DEVICE
JPS57104325A (en) Ecl circuit
ES8302988A1 (en) Improvements in the call circuits by push button with pulse signaling for telephone appliances. (Machine-translation by Google Translate, not legally binding)
AU4082978A (en) Telephone party line control circuit
JPS57212856A (en) Terminal adaptor system
ES8202218A1 (en) Improvements in circuits of call by pushbutton, with service of redemption. (Machine-translation by Google Translate, not legally binding)
ES8302989A1 (en) Improvements in the circuits of call by push button with multi-frequency signage for telephone appliances. (Machine-translation by Google Translate, not legally binding)
JPS53117922A (en) Absence reception voice answer skip system
JPS53116008A (en) Electronic type key telephone
ES8102762A1 (en) Improvements in call circuits by push-button for telephone appliances (Machine-translation by Google Translate, not legally binding)
ES8101347A1 (en) Improvements in call circuits by push-button for telephone appliances (Machine-translation by Google Translate, not legally binding)
SE8304014D0 (en) CLICK CONTACT DEVICE FOR A PHONE DEVICE WITH PRESSURE BUTTON
KR860002227Y1 (en) Home keyphone
JPS56157160A (en) Telephone terminal outgoing system
JPS51144503A (en) Telephone set
GB1461015A (en) Electronic switch circuits
ES2005086A6 (en) Call current detector circuit (Machine-translation by Google Translate, not legally binding)
JPS52101907A (en) Shunt type current switching scanning method

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19960603