ES437415A1 - Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
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.)
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 SAfiledCriticalTelefonica Nacional de Espana SA
Priority to ES437415ApriorityCriticalpatent/ES437415A1/en
Publication of ES437415A1publicationCriticalpatent/ES437415A1/en
Signal adapter between telephone exchanges direct current/multi frequency a e and my vice versa, essentially characterized in that it comprises a transceiver circuit of direct current signaling and a transponder-signaling circuit e or m composed of both electromechanical functional blocks. (Machine-translation by Google Translate, not legally binding)
ES437415A1975-05-031975-05-03Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
ExpiredES437415A1
(en)
Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
Signal adapter between telephone plans frequency vocal a, e and m multifrecuencia, and viceversa. (Machine-translation by Google Translate, not legally binding)