JPS56165451A - Control circuit of call signal - Google Patents
Control circuit of call signalInfo
- Publication number
- JPS56165451A JPS56165451A JP6922380A JP6922380A JPS56165451A JP S56165451 A JPS56165451 A JP S56165451A JP 6922380 A JP6922380 A JP 6922380A JP 6922380 A JP6922380 A JP 6922380A JP S56165451 A JPS56165451 A JP S56165451A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- answer
- call signal
- phase
- circuit
- 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
- H04M19/026—Arrangements for interrupting the ringing current
-
- 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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6922380A JPS56165451A (en) | 1980-05-24 | 1980-05-24 | Control circuit of call signal |
US06/265,630 US4409438A (en) | 1980-05-24 | 1981-05-20 | Ringing control circuit in a telephone switching system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6922380A JPS56165451A (en) | 1980-05-24 | 1980-05-24 | Control circuit of call signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56165451A true JPS56165451A (en) | 1981-12-19 |
Family
ID=13396505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6922380A Pending JPS56165451A (en) | 1980-05-24 | 1980-05-24 | Control circuit of call signal |
Country Status (2)
Country | Link |
---|---|
US (1) | US4409438A (ja) |
JP (1) | JPS56165451A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6157158A (ja) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | リングトリツプ制御方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4605824A (en) * | 1983-03-30 | 1986-08-12 | Siemens Aktiengesellschaft | Circuit arrangement for telecommunication exchange systems, particularly telephone exchange systems with switch facilities for emitting signals |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076059A (en) * | 1958-06-20 | 1963-01-29 | Bell Telephone Labor Inc | Signaling system |
US3978292A (en) * | 1974-11-07 | 1976-08-31 | Bell Telephone Laboratories, Incorporated | Ringing control circuitry with shared ringing loop current detector |
US3978293A (en) * | 1974-11-07 | 1976-08-31 | Bell Telephone Laboratories, Incorporated | Ringing control circuitry with shared ringing loop current detector |
US4081613A (en) * | 1976-05-14 | 1978-03-28 | International Telephone And Telegraph Corporation | Bi-directional signalling arrangement for telecommunications systems |
JPS5328317A (en) * | 1976-08-30 | 1978-03-16 | Hitachi Ltd | Control system of subscriber's calling signal |
FR2451682A1 (fr) * | 1979-03-12 | 1980-10-10 | Jeumont Schneider | Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires |
FR2452832A1 (fr) * | 1979-03-30 | 1980-10-24 | Telecommunications Sa | Dispositif de commande de sonnerie |
-
1980
- 1980-05-24 JP JP6922380A patent/JPS56165451A/ja active Pending
-
1981
- 1981-05-20 US US06/265,630 patent/US4409438A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6157158A (ja) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | リングトリツプ制御方法 |
Also Published As
Publication number | Publication date |
---|---|
US4409438A (en) | 1983-10-11 |
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