JPS51150907A - Subsriber line signal transmission system - Google Patents
Subsriber line signal transmission systemInfo
- Publication number
- JPS51150907A JPS51150907A JP7453575A JP7453575A JPS51150907A JP S51150907 A JPS51150907 A JP S51150907A JP 7453575 A JP7453575 A JP 7453575A JP 7453575 A JP7453575 A JP 7453575A JP S51150907 A JPS51150907 A JP S51150907A
- Authority
- JP
- Japan
- Prior art keywords
- signal transmission
- transmission system
- line signal
- subsriber
- subsriber line
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
PURPOSE:To eliminate the relay contract group employed to switch the subscriber's circuit to signal source, thereby achieving compact design and improving transmission qualith such as ground balance.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7453575A JPS51150907A (en) | 1975-06-20 | 1975-06-20 | Subsriber line signal transmission system |
US05/695,760 US4150260A (en) | 1975-06-18 | 1976-06-14 | Subscriber's circuit for four-wire-system local switch |
GB24968/76A GB1554421A (en) | 1975-06-18 | 1976-06-16 | Subscriber's circuit for four-wire-system local switch |
DE2627140A DE2627140C3 (en) | 1975-06-18 | 1976-06-16 | Hybrid circuit in subscriber circuit |
NLAANVRAGE7606570,A NL178117C (en) | 1975-06-18 | 1976-06-17 | COUPLING DEVICE FOR FORMING A COUPLING BETWEEN A FOUR-WAY PATH OF A TIME MULTIPLEX SWITCH NETWORK AND A TWO-WIRE SUBSCRIBER LINE. |
CA255,082A CA1057437A (en) | 1975-06-18 | 1976-06-17 | Subscriber's circuit for four-wire-system local switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7453575A JPS51150907A (en) | 1975-06-20 | 1975-06-20 | Subsriber line signal transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS51150907A true JPS51150907A (en) | 1976-12-24 |
Family
ID=13550069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7453575A Pending JPS51150907A (en) | 1975-06-18 | 1975-06-20 | Subsriber line signal transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51150907A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180170U (en) * | 1985-04-04 | 1985-11-29 | 日通工株式会社 | Switching device signal circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700831A (en) * | 1970-01-13 | 1972-10-24 | Philips Corp | Hybrid circuit |
JPS5132112A (en) * | 1974-09-12 | 1976-03-18 | Oki Electric Ind Co Ltd | KANYUSHAKAIRO |
-
1975
- 1975-06-20 JP JP7453575A patent/JPS51150907A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700831A (en) * | 1970-01-13 | 1972-10-24 | Philips Corp | Hybrid circuit |
JPS5132112A (en) * | 1974-09-12 | 1976-03-18 | Oki Electric Ind Co Ltd | KANYUSHAKAIRO |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180170U (en) * | 1985-04-04 | 1985-11-29 | 日通工株式会社 | Switching device signal circuit |
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