BE641854A - - Google Patents
Info
- Publication number
- BE641854A BE641854A BE641854DA BE641854A BE 641854 A BE641854 A BE 641854A BE 641854D A BE641854D A BE 641854DA BE 641854 A BE641854 A BE 641854A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US248128A US3261923A (en) | 1962-12-28 | 1962-12-28 | Frequency-shift dial pulsing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE641854A true BE641854A (en:Method) |
Family
ID=22937788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE641854D BE641854A (en:Method) | 1962-12-28 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3261923A (en:Method) |
| BE (1) | BE641854A (en:Method) |
| GB (1) | GB1069629A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3707140A (en) * | 1970-11-25 | 1972-12-26 | Stromberg Carlson Corp | Telephone switching network signalling system |
| US4868861A (en) * | 1988-04-28 | 1989-09-19 | Amaf Industries, Inc. | Trunk dialing converter |
-
0
- BE BE641854D patent/BE641854A/xx unknown
-
1962
- 1962-12-28 US US248128A patent/US3261923A/en not_active Expired - Lifetime
-
1963
- 1963-12-19 GB GB50127/63A patent/GB1069629A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1069629A (en) | 1967-05-24 |
| US3261923A (en) | 1966-07-19 |