AU508271B2 - Translating multiple frequency signalling - Google Patents
Translating multiple frequency signallingInfo
- Publication number
- AU508271B2 AU508271B2 AU22448/77A AU2244877A AU508271B2 AU 508271 B2 AU508271 B2 AU 508271B2 AU 22448/77 A AU22448/77 A AU 22448/77A AU 2244877 A AU2244877 A AU 2244877A AU 508271 B2 AU508271 B2 AU 508271B2
- Authority
- AU
- Australia
- Prior art keywords
- multiple frequency
- frequency signalling
- translating multiple
- translating
- signalling
- 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
- 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
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Stereo-Broadcasting Methods (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA247,035A CA1031086A (en) | 1976-03-03 | 1976-03-03 | Method and apparatus for translating multiple frequency signalling |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2244877A AU2244877A (en) | 1978-08-24 |
AU508271B2 true AU508271B2 (en) | 1980-03-13 |
Family
ID=4105372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU22448/77A Expired AU508271B2 (en) | 1976-03-03 | 1977-02-18 | Translating multiple frequency signalling |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS52107708A (xx) |
AU (1) | AU508271B2 (xx) |
BE (1) | BE852056A (xx) |
CA (1) | CA1031086A (xx) |
DE (1) | DE2709370A1 (xx) |
DK (1) | DK88877A (xx) |
FR (1) | FR2343377A1 (xx) |
GB (1) | GB1532103A (xx) |
NL (1) | NL186057C (xx) |
NO (1) | NO770696L (xx) |
SE (1) | SE424129B (xx) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU592886B2 (en) * | 1986-09-03 | 1990-01-25 | Alcatel N.V. | Signalling receiver |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5831140B2 (ja) * | 1978-11-10 | 1983-07-04 | 株式会社日立製作所 | 信号受信器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3710031A (en) * | 1970-12-23 | 1973-01-09 | Itt | Multi frequency receiver |
FR2127450A5 (xx) * | 1971-03-03 | 1972-10-13 | Ibm France | |
BR7101977D0 (pt) * | 1971-04-05 | 1973-06-14 | Ibm | Processos e disposicoes de circuito para decodificacao digital de sinais de frequencia codificada |
CA976675A (en) * | 1972-10-16 | 1975-10-21 | Microsystems International Limited | Dual tone receiver |
US3914557A (en) * | 1973-04-11 | 1975-10-21 | Bell Telephone Labor Inc | Multifrequency tone detecting arrangement |
US3936801A (en) * | 1974-09-12 | 1976-02-03 | Bell Telephone Laboratories, Incorporated | Multifrequency signal receiver timing circuit |
-
1976
- 1976-03-03 CA CA247,035A patent/CA1031086A/en not_active Expired
-
1977
- 1977-02-18 AU AU22448/77A patent/AU508271B2/en not_active Expired
- 1977-02-23 GB GB7674/77A patent/GB1532103A/en not_active Expired
- 1977-03-01 NO NO770696A patent/NO770696L/no unknown
- 1977-03-01 JP JP2092077A patent/JPS52107708A/ja active Pending
- 1977-03-01 DK DK88877A patent/DK88877A/da not_active Application Discontinuation
- 1977-03-02 NL NLAANVRAGE7702219,A patent/NL186057C/xx not_active IP Right Cessation
- 1977-03-03 DE DE19772709370 patent/DE2709370A1/de not_active Ceased
- 1977-03-03 BE BE175450A patent/BE852056A/xx unknown
- 1977-03-03 SE SE7702418A patent/SE424129B/xx not_active IP Right Cessation
- 1977-03-03 FR FR7706234A patent/FR2343377A1/fr active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU592886B2 (en) * | 1986-09-03 | 1990-01-25 | Alcatel N.V. | Signalling receiver |
Also Published As
Publication number | Publication date |
---|---|
CA1031086A (en) | 1978-05-09 |
JPS52107708A (en) | 1977-09-09 |
SE7702418L (sv) | 1977-09-04 |
GB1532103A (en) | 1978-11-15 |
DK88877A (da) | 1977-09-04 |
BE852056A (fr) | 1977-07-01 |
NL186057B (nl) | 1990-04-02 |
FR2343377A1 (fr) | 1977-09-30 |
FR2343377B1 (xx) | 1983-08-12 |
NL186057C (nl) | 1990-09-03 |
NO770696L (no) | 1977-09-06 |
AU2244877A (en) | 1978-08-24 |
SE424129B (sv) | 1982-06-28 |
NL7702219A (nl) | 1977-09-06 |
DE2709370A1 (de) | 1977-09-08 |
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