JPS4851521A - - Google Patents
Info
- Publication number
- JPS4851521A JPS4851521A JP47105130A JP10513072A JPS4851521A JP S4851521 A JPS4851521 A JP S4851521A JP 47105130 A JP47105130 A JP 47105130A JP 10513072 A JP10513072 A JP 10513072A JP S4851521 A JPS4851521 A JP S4851521A
- 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
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Radio Relay Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2152721A DE2152721C2 (de) | 1971-10-22 | 1971-10-22 | System zur Übertragung von In formationen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4851521A true JPS4851521A (fr) | 1973-07-19 |
| JPS5434485B2 JPS5434485B2 (fr) | 1979-10-27 |
Family
ID=5823130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10513072A Expired JPS5434485B2 (fr) | 1971-10-22 | 1972-10-20 |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5434485B2 (fr) |
| AR (1) | AR201272A1 (fr) |
| AT (1) | AT318013B (fr) |
| AU (1) | AU451259B2 (fr) |
| BE (1) | BE790393A (fr) |
| CA (1) | CA996192A (fr) |
| CH (1) | CH545042A (fr) |
| DE (1) | DE2152721C2 (fr) |
| FI (1) | FI58415C (fr) |
| FR (1) | FR2156830B1 (fr) |
| GB (1) | GB1407088A (fr) |
| IL (1) | IL40552A (fr) |
| IT (1) | IT969653B (fr) |
| NL (1) | NL163397B (fr) |
| SE (1) | SE388329B (fr) |
| YU (1) | YU35201B (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3232668A1 (de) * | 1982-09-02 | 1984-03-08 | Siemens AG, 1000 Berlin und 8000 München | System zur uebertragung von informationen |
| DE3232691A1 (de) * | 1982-09-02 | 1984-03-08 | Siemens AG, 1000 Berlin und 8000 München | System zur uebertragung von informationen |
| DE3642378A1 (de) * | 1986-12-11 | 1988-06-30 | Siemens Ag | System zur uebertragung von informationen mit ersatzschalteinrichtungen |
| GB2260881B (en) * | 1991-10-26 | 1995-08-23 | Motorola Ltd | Trunked system fallback operation |
| WO1997015987A1 (fr) * | 1995-10-25 | 1997-05-01 | Siemens Aktiengesellschaft | Systeme de transmission d'informations par fonctionnement mixte d'un pdh et d'un sdh avec un canal de transmission en reserve |
-
1971
- 1971-10-22 DE DE2152721A patent/DE2152721C2/de not_active Expired
-
1972
- 1972-09-29 GB GB4501372A patent/GB1407088A/en not_active Expired
- 1972-10-06 AT AT859872A patent/AT318013B/de not_active IP Right Cessation
- 1972-10-06 CH CH1466172A patent/CH545042A/de not_active IP Right Cessation
- 1972-10-11 AU AU47646/72A patent/AU451259B2/en not_active Expired
- 1972-10-11 IL IL40552A patent/IL40552A/xx unknown
- 1972-10-11 YU YU2548/72A patent/YU35201B/xx unknown
- 1972-10-13 CA CA153,845A patent/CA996192A/en not_active Expired
- 1972-10-18 IT IT30612/72A patent/IT969653B/it active
- 1972-10-19 FI FI2903/72A patent/FI58415C/fi active
- 1972-10-19 SE SE7213498A patent/SE388329B/xx unknown
- 1972-10-19 FR FR7237077A patent/FR2156830B1/fr not_active Expired
- 1972-10-20 JP JP10513072A patent/JPS5434485B2/ja not_active Expired
- 1972-10-20 NL NL7214293.A patent/NL163397B/xx not_active IP Right Cessation
- 1972-10-20 BE BE790393D patent/BE790393A/fr unknown
- 1972-10-20 AR AR244755A patent/AR201272A1/es active
Also Published As
| Publication number | Publication date |
|---|---|
| FI58415C (fi) | 1981-01-12 |
| IL40552A0 (en) | 1972-12-29 |
| IT969653B (it) | 1974-04-10 |
| AU4764672A (en) | 1974-04-26 |
| CH545042A (de) | 1973-11-30 |
| FR2156830B1 (fr) | 1977-04-01 |
| YU35201B (en) | 1980-09-25 |
| CA996192A (en) | 1976-08-31 |
| NL7214293A (fr) | 1973-04-25 |
| DE2152721C2 (de) | 1973-10-31 |
| AR201272A1 (es) | 1975-02-28 |
| AU451259B2 (en) | 1974-08-01 |
| JPS5434485B2 (fr) | 1979-10-27 |
| YU254872A (en) | 1980-03-15 |
| BE790393A (fr) | 1973-02-15 |
| FR2156830A1 (fr) | 1973-06-01 |
| AT318013B (de) | 1974-09-25 |
| GB1407088A (en) | 1975-09-24 |
| DE2152721A1 (fr) | 1973-04-12 |
| SE388329B (sv) | 1976-09-27 |
| IL40552A (en) | 1975-12-31 |
| NL163397B (nl) | 1980-03-17 |
| DE2152721B1 (de) | 1973-04-12 |
| FI58415B (fi) | 1980-09-30 |