JPS51117811A - Call signal send system - Google Patents
Call signal send systemInfo
- Publication number
- JPS51117811A JPS51117811A JP4236175A JP4236175A JPS51117811A JP S51117811 A JPS51117811 A JP S51117811A JP 4236175 A JP4236175 A JP 4236175A JP 4236175 A JP4236175 A JP 4236175A JP S51117811 A JPS51117811 A JP S51117811A
- Authority
- JP
- Japan
- Prior art keywords
- call signal
- signal send
- send system
- economized
- multiplex
- 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
Abstract
PURPOSE:The call signal send system is economized by using a multiplex-mode call signal send circuit having a function to detect call signal trunk ring trips.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4236175A JPS51117811A (en) | 1975-04-09 | 1975-04-09 | Call signal send system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4236175A JPS51117811A (en) | 1975-04-09 | 1975-04-09 | Call signal send system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS51117811A true JPS51117811A (en) | 1976-10-16 |
Family
ID=12633886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4236175A Pending JPS51117811A (en) | 1975-04-09 | 1975-04-09 | Call signal send system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51117811A (en) |
-
1975
- 1975-04-09 JP JP4236175A patent/JPS51117811A/en active Pending
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