IT1027865B - Circuito per controllare l impie go di linea in particolare una linea telefonica - Google Patents
Circuito per controllare l impie go di linea in particolare una linea telefonicaInfo
- Publication number
- IT1027865B IT1027865B IT3078974A IT3078974A IT1027865B IT 1027865 B IT1027865 B IT 1027865B IT 3078974 A IT3078974 A IT 3078974A IT 3078974 A IT3078974 A IT 3078974A IT 1027865 B IT1027865 B IT 1027865B
- Authority
- IT
- Italy
- Prior art keywords
- line
- checking
- circuit
- implement
- telephone line
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Meter Arrangements (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43893074A | 1974-02-01 | 1974-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1027865B true IT1027865B (it) | 1978-12-20 |
Family
ID=23742623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT3078974A IT1027865B (it) | 1974-02-01 | 1974-12-20 | Circuito per controllare l impie go di linea in particolare una linea telefonica |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS50119509A (zh) |
DE (1) | DE2460991A1 (zh) |
FR (1) | FR2260237A1 (zh) |
IT (1) | IT1027865B (zh) |
-
1974
- 1974-12-20 IT IT3078974A patent/IT1027865B/it active
- 1974-12-21 DE DE19742460991 patent/DE2460991A1/de active Pending
- 1974-12-27 FR FR7443562A patent/FR2260237A1/fr active Granted
-
1975
- 1975-01-14 JP JP600975A patent/JPS50119509A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS50119509A (zh) | 1975-09-19 |
DE2460991A1 (de) | 1975-08-14 |
FR2260237B1 (zh) | 1978-11-24 |
FR2260237A1 (en) | 1975-08-29 |
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