JPS5075303A - - Google Patents
Info
- Publication number
- JPS5075303A JPS5075303A JP49124218A JP12421874A JPS5075303A JP S5075303 A JPS5075303 A JP S5075303A JP 49124218 A JP49124218 A JP 49124218A JP 12421874 A JP12421874 A JP 12421874A JP S5075303 A JPS5075303 A JP S5075303A
- Authority
- JP
- Japan
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00410745A US3840706A (en) | 1973-10-29 | 1973-10-29 | Remote test circuit for carrier telephones |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5075303A true JPS5075303A (ja) | 1975-06-20 |
| JPS5734715B2 JPS5734715B2 (ja) | 1982-07-24 |
Family
ID=23626041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12421874A Expired JPS5734715B2 (ja) | 1973-10-29 | 1974-10-28 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3840706A (ja) |
| JP (1) | JPS5734715B2 (ja) |
| AR (1) | AR206613A1 (ja) |
| BR (1) | BR7408869D0 (ja) |
| CA (1) | CA1000880A (ja) |
| GB (1) | GB1450978A (ja) |
| IL (1) | IL45761A (ja) |
| OA (1) | OA04837A (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5299008A (en) * | 1976-02-16 | 1977-08-19 | Toshiba Corp | Calling signal system |
| JPS55112071A (en) * | 1979-02-22 | 1980-08-29 | Nec Corp | Dispatching telephone system |
| JPS5854770A (ja) * | 1981-09-27 | 1983-03-31 | Sanii Denshi Kk | Ｆｍ搬送波式インタ−ホンの通信方式 |
| JPS5863261A (ja) * | 1981-10-12 | 1983-04-15 | Nikko Denki Seisakusho:Kk | 一斉通話指令装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4045624A (en) * | 1976-04-02 | 1977-08-30 | Carrier Telephone Corporation Of America, Inc. | Continuous monitoring in carrier telephone systems |
| US4170722A (en) * | 1978-02-17 | 1979-10-09 | Gte Automatic Electric Laboratories, Incorporated | Apparatus and method for remote testing of a loop transmission path |
| US4429391A (en) | 1981-05-04 | 1984-01-31 | Bell Telephone Laboratories, Incorporated | Fault and error detection arrangement |
| US4698501A (en) * | 1985-05-16 | 1987-10-06 | Nl Industries, Inc. | System for simultaneous gamma-gamma formation density logging while drilling |
| US5412709A (en) * | 1992-06-24 | 1995-05-02 | Charter Leasing Corporation | Digital telephone station line controller |
-
1973
- 1973-10-29 US US00410745A patent/US3840706A/en not_active Expired - Lifetime
-
1974
- 1974-01-01 AR AR256322A patent/AR206613A1/es active
- 1974-09-13 CA CA209,158A patent/CA1000880A/en not_active Expired
- 1974-09-23 GB GB4127474A patent/GB1450978A/en not_active Expired
- 1974-10-02 IL IL45761A patent/IL45761A/en unknown
- 1974-10-24 BR BR8869/74A patent/BR7408869D0/pt unknown
- 1974-10-28 JP JP12421874A patent/JPS5734715B2/ja not_active Expired
- 1974-10-28 OA OA55330A patent/OA04837A/xx unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5299008A (en) * | 1976-02-16 | 1977-08-19 | Toshiba Corp | Calling signal system |
| JPS55112071A (en) * | 1979-02-22 | 1980-08-29 | Nec Corp | Dispatching telephone system |
| JPS5854770A (ja) * | 1981-09-27 | 1983-03-31 | Sanii Denshi Kk | Ｆｍ搬送波式インタ−ホンの通信方式 |
| JPS5863261A (ja) * | 1981-10-12 | 1983-04-15 | Nikko Denki Seisakusho:Kk | 一斉通話指令装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5734715B2 (ja) | 1982-07-24 |
| AR206613A1 (es) | 1976-08-06 |
| IL45761A (en) | 1976-11-30 |
| US3840706A (en) | 1974-10-08 |
| BR7408869D0 (pt) | 1975-08-26 |
| AU7341774A (en) | 1976-03-25 |
| IL45761A0 (en) | 1974-12-31 |
| CA1000880A (en) | 1976-11-30 |
| GB1450978A (en) | 1976-09-29 |
| OA04837A (fr) | 1980-10-31 |