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.)
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 SAfiledCriticalAlcatel Espana SA
Publication of ES282666A1publicationCriticalpatent/ES282666A1/en
Arrangements For Transmission Of Measured Signals
(AREA)
Abstract
Shared telephone installation that includes a first and second telephone devices each of which is constituted by a dial-up and conversation section that has two terminals and a chime section, a common two-wire line for both devices, a chime circuit interspersed between the ground and a first wire of the line in the first apparatus and between ground and a second wire of the line in said second apparatus, characterized by comprising between each terminal of said dialing and conversation section of each of the apparatuses and the respective wires of said line an asymmetric connection impedance, said asymmetrical impedances of connection of the same direction of circulation for each device and of opposite direction in each apparatus with respect to the other and in each apparatus an asymmetric impedance of identification between ground and the terminal of said dialing and conversation section corresponding to the line wire connected to said bell circuit, said identification impedance being opposite to the asymmetric connection impedance corresponding to that same line wire in the same apparatus, a normally open fork contact interspersed in series with the terminal not corresponding to the bell circuit Meter connection means and connection identifier means for each of said apparatuses, the actuation circuit of said meter connection means and said identifier means being for each apparatus interposed between ground and said line wire connected to the circuit of bell. (Machine-translation by Google Translate, not legally binding)
ES0282666A1961-12-291962-11-21Telephone system of shared line (Machine-translation by Google Translate, not legally binding)
ExpiredES282666A1
(en)
Circuit provision for telecommunication link installations, particularly for telephone installations with coupling fields. (Machine-translation by Google Translate, not legally binding)
A circuit provision for telecommunications installations, especially telephony with duplex subscriber lines. (Machine-translation by Google Translate, not legally binding)
A circuit provision for a centrally governed telephone installation with coupling field technology. (Machine-translation by Google Translate, not legally binding)
A circuit provision for telecommunications installations, especially for telephone installations with connection fields structured in the form of matrices. (Machine-translation by Google Translate, not legally binding)