JPS5478912A - Subscriber circuit - Google Patents
Subscriber circuitInfo
- Publication number
- JPS5478912A JPS5478912A JP14615377A JP14615377A JPS5478912A JP S5478912 A JPS5478912 A JP S5478912A JP 14615377 A JP14615377 A JP 14615377A JP 14615377 A JP14615377 A JP 14615377A JP S5478912 A JPS5478912 A JP S5478912A
- Authority
- JP
- Japan
- Prior art keywords
- ringing
- time
- relay
- circuit
- ring trip
- 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
Landscapes
- Devices For Supply Of Signal Current (AREA)
Abstract
PURPOSE: To enable to make common the ring trip circuit with the subscribing circuits in number corresponding to the number of phases, by utilizing the phase relation of ringing.
CONSTITUTION: The ringing signal is delivered in the period of time T for a plurality of phases A to C from the signal source CR. At the incoming connection, the subscriber circuit receiving the ringing delivery indication from the processor stores information to FF4, the relay R is interrupted corresponding to the continuous pulse of the phase A with the AND element 5, the continuous ringing CR is delivered via the ring trip circuit 6 by the time t1 to the telephone set TEL, the relay R is restored in the time t2 and the subscriber is in the state of call out with this repetitive operation. Further, when the subscribers of No1 and No2 are simultaneously called, the identification of the subscribers can be made by obtaining the AND logic for the state of the relay R in operation at time t1 for the information detecting the ring trip with the circuit 6.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14615377A JPS5478912A (en) | 1977-12-07 | 1977-12-07 | Subscriber circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14615377A JPS5478912A (en) | 1977-12-07 | 1977-12-07 | Subscriber circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5478912A true JPS5478912A (en) | 1979-06-23 |
Family
ID=15401324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14615377A Pending JPS5478912A (en) | 1977-12-07 | 1977-12-07 | Subscriber circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5478912A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59140572U (en) * | 1983-03-11 | 1984-09-19 | 株式会社東芝 | ring trip circuit |
JPS6080352A (en) * | 1983-10-07 | 1985-05-08 | Nec Corp | Circuit for preventing mis-scanning |
JPS6157158A (en) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | Ring trip control system |
JPS6182563A (en) * | 1984-09-29 | 1986-04-26 | Fujitsu Ltd | Ring trip device |
JPS63127643A (en) * | 1986-11-18 | 1988-05-31 | Tamura Electric Works Ltd | Telephone exchange |
-
1977
- 1977-12-07 JP JP14615377A patent/JPS5478912A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59140572U (en) * | 1983-03-11 | 1984-09-19 | 株式会社東芝 | ring trip circuit |
JPS6080352A (en) * | 1983-10-07 | 1985-05-08 | Nec Corp | Circuit for preventing mis-scanning |
JPS6157158A (en) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | Ring trip control system |
JPS6182563A (en) * | 1984-09-29 | 1986-04-26 | Fujitsu Ltd | Ring trip device |
JPS63127643A (en) * | 1986-11-18 | 1988-05-31 | Tamura Electric Works Ltd | Telephone exchange |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5289530A (en) | Method and apparatus for vocally communicating to a caller at a remote telephone station synthesized speech of stored special service information | |
GB1379805A (en) | Telephone substation automatic operating system | |
US4143243A (en) | Telephone system | |
DE3586748D1 (en) | REPROGRAMMABLE CALL DIVERSION DEVICE. | |
JPS5478912A (en) | Subscriber circuit | |
CA1069607A (en) | Time division multiplexed pabx communication switching system | |
JPS5469905A (en) | Answering system for call signal of automatic answering telephone set | |
JPS56156058A (en) | Automatic telephone transfer device | |
JPS5521660A (en) | Selection signal system | |
JPS55165063A (en) | Facsimile communication system | |
JPS57133745A (en) | Telephone set having number display and automatic dial function | |
US5144652A (en) | Device for connecting a subscriber line to a selected internal line | |
SU965010A2 (en) | Device for automatic calling of subscribers | |
JPS5660156A (en) | Originating connection system | |
JPS6454853A (en) | Automatic exchange with incoming rejection service function | |
JPS5558653A (en) | Automatic calling control system | |
RU1828567C (en) | Device for display of number of calling subscriber on telephone set of called subscriber | |
JPS6472651A (en) | Calling system by character dial | |
JPS5370608A (en) | Key telephone unit | |
JPS5650655A (en) | Telephone set | |
SU1170628A1 (en) | Device for quick voice communication | |
JPS5689162A (en) | Number change guide system | |
SU513525A2 (en) | Automatic telephone station alert device | |
JPS57210760A (en) | Telephone exchanger | |
JPS56128055A (en) | Incoming selective terminal equipment |