JPS5514710A - Sending system of trunk signal tone - Google Patents
Sending system of trunk signal toneInfo
- Publication number
- JPS5514710A JPS5514710A JP8677078A JP8677078A JPS5514710A JP S5514710 A JPS5514710 A JP S5514710A JP 8677078 A JP8677078 A JP 8677078A JP 8677078 A JP8677078 A JP 8677078A JP S5514710 A JPS5514710 A JP S5514710A
- Authority
- JP
- Japan
- Prior art keywords
- given
- relay
- transmitted
- signal tone
- tone
- 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.)
- Granted
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:To obtain a highly economical and flexible device by sending the signal tone by the indication given from the common control unit and through the intermittent operation of the realy of the trunk. CONSTITUTION:The signal tone is sent to the telephone set through operation of the relay by trunk driving unit TC and based on the command given from common control CC plus the signal tone output from signal tone generator SG and via the teritary winding of relay A. First dial tone DT is given by the comman given to TC from CC ordering to give relay S the intermittent operation with the cycle of 120 times per minute, and as a result signal tone output 400Hz is continued via the make contact and then transmitted to the telephone set. In case busy tone BT is transmitted from originating register ORT, the intermittent operation is given to relay S with the cycle of 60 times per minute through CC and the signal tone output of SG is transmitted to the telephone via the make contact s. And in case call signal RBT is transmitted to the caller, the intermittent operation command is given to relay T from CC in the cycle of 20 times per minute. And when holding tone HT is transmitted, the command is given to actuate relay S and T.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8677078A JPS5514710A (en) | 1978-07-18 | 1978-07-18 | Sending system of trunk signal tone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8677078A JPS5514710A (en) | 1978-07-18 | 1978-07-18 | Sending system of trunk signal tone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5514710A true JPS5514710A (en) | 1980-02-01 |
JPS6227585B2 JPS6227585B2 (en) | 1987-06-16 |
Family
ID=13895975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8677078A Granted JPS5514710A (en) | 1978-07-18 | 1978-07-18 | Sending system of trunk signal tone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5514710A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57201368A (en) * | 1981-06-03 | 1982-12-09 | Fujitsu Ltd | Ring-back tone send-out system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52130219A (en) * | 1976-04-24 | 1977-11-01 | Fujitsu Ltd | Transmission control system for call signal |
-
1978
- 1978-07-18 JP JP8677078A patent/JPS5514710A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52130219A (en) * | 1976-04-24 | 1977-11-01 | Fujitsu Ltd | Transmission control system for call signal |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57201368A (en) * | 1981-06-03 | 1982-12-09 | Fujitsu Ltd | Ring-back tone send-out system |
JPS6322667B2 (en) * | 1981-06-03 | 1988-05-12 | Fujitsu Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6227585B2 (en) | 1987-06-16 |
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