AU449604B2 - High capacity paging system employing subaudible tones - Google Patents
High capacity paging system employing subaudible tonesInfo
- Publication number
- AU449604B2 AU449604B2 AU51849/73A AU5184973A AU449604B2 AU 449604 B2 AU449604 B2 AU 449604B2 AU 51849/73 A AU51849/73 A AU 51849/73A AU 5184973 A AU5184973 A AU 5184973A AU 449604 B2 AU449604 B2 AU 449604B2
- Authority
- AU
- Australia
- Prior art keywords
- high capacity
- system employing
- paging system
- subaudible tones
- capacity paging
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
- H04W88/188—Selective call encoders for paging networks, e.g. paging centre devices using frequency address codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22419972A | 1972-02-07 | 1972-02-07 | |
USUS224199 | 1972-02-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU449604B2 true AU449604B2 (en) | 1974-06-20 |
AU5184973A AU5184973A (en) | 1974-06-20 |
Family
ID=22839667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU51849/73A Expired AU449604B2 (en) | 1972-02-07 | 1973-02-06 | High capacity paging system employing subaudible tones |
Country Status (7)
Country | Link |
---|---|
US (1) | US3798545A (en) |
JP (1) | JPS5411081B2 (en) |
AR (1) | AR193469A1 (en) |
AU (1) | AU449604B2 (en) |
CA (1) | CA997427A (en) |
DE (1) | DE2305944C3 (en) |
GB (1) | GB1374377A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973200A (en) * | 1972-11-07 | 1976-08-03 | Telefonaktiebolaget L M Ericsson | Process for acknowledging calls in a system for wireless staff locators |
US4355210A (en) * | 1980-09-22 | 1982-10-19 | Midian Electronics, Inc. | Sub-miniature tone encoder with automatic number identification |
AT411122B (en) * | 2001-12-03 | 2003-09-25 | Frequentis Nachrichtentechnik Gmbh | METHOD AND COMMUNICATION DEVICE FOR TRANSMITTING MESSAGES |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2038647A (en) * | 1934-09-14 | 1936-04-28 | American Telephone & Telegraph | Signaling system |
GB630819A (en) * | 1946-09-07 | |||
US2671166A (en) * | 1950-07-01 | 1954-03-02 | Gen Railway Signal Co | Radio communications system |
US2918524A (en) * | 1956-06-15 | 1959-12-22 | Henry M Hume | Television program control |
US3387101A (en) * | 1965-10-20 | 1968-06-04 | William J. Skiles | Identifier for two-way mobile transmityters |
US3397401A (en) * | 1966-05-27 | 1968-08-13 | Hughes Aircraft Co | Voice operated communication system |
US3467790A (en) * | 1967-10-04 | 1969-09-16 | Lanier Electronic Lab Inc | Dictation-transcription device |
US3581208A (en) * | 1968-12-16 | 1971-05-25 | William Buehrle Jr | Emergency warning and identification apparatus for two-way radio communication system |
-
1972
- 1972-02-07 US US00224199A patent/US3798545A/en not_active Expired - Lifetime
-
1973
- 1973-01-11 CA CA161,007A patent/CA997427A/en not_active Expired
- 1973-01-19 GB GB290573A patent/GB1374377A/en not_active Expired
- 1973-02-02 AR AR246413A patent/AR193469A1/en active
- 1973-02-06 AU AU51849/73A patent/AU449604B2/en not_active Expired
- 1973-02-06 JP JP1436073A patent/JPS5411081B2/ja not_active Expired
- 1973-02-07 DE DE2305944A patent/DE2305944C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS4891902A (en) | 1973-11-29 |
AR193469A1 (en) | 1973-04-23 |
DE2305944A1 (en) | 1973-08-30 |
US3798545A (en) | 1974-03-19 |
DE2305944B2 (en) | 1974-04-25 |
JPS5411081B2 (en) | 1979-05-11 |
GB1374377A (en) | 1974-11-20 |
DE2305944C3 (en) | 1974-11-21 |
AU5184973A (en) | 1974-06-20 |
CA997427A (en) | 1976-09-21 |
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