CA1160782A - Combines telephoniques - Google Patents
Combines telephoniquesInfo
- Publication number
- CA1160782A CA1160782A CA000356996A CA356996A CA1160782A CA 1160782 A CA1160782 A CA 1160782A CA 000356996 A CA000356996 A CA 000356996A CA 356996 A CA356996 A CA 356996A CA 1160782 A CA1160782 A CA 1160782A
- Authority
- CA
- Canada
- Prior art keywords
- transducer
- signalling
- speech
- handset
- tones
- 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
- 230000011664 signaling Effects 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7925970 | 1979-07-25 | ||
| GB7925970 | 1979-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1160782A true CA1160782A (fr) | 1984-01-17 |
Family
ID=10506767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000356996A Expired CA1160782A (fr) | 1979-07-25 | 1980-07-25 | Combines telephoniques |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5650654A (fr) |
| AU (1) | AU536058B2 (fr) |
| BR (1) | BR8004586A (fr) |
| CA (1) | CA1160782A (fr) |
| CH (1) | CH654704A5 (fr) |
| PT (1) | PT71559A (fr) |
| ZA (1) | ZA804431B (fr) |
-
1980
- 1980-07-15 AU AU60414/80A patent/AU536058B2/en not_active Ceased
- 1980-07-16 PT PT71559A patent/PT71559A/pt unknown
- 1980-07-23 BR BR8004586A patent/BR8004586A/pt unknown
- 1980-07-23 ZA ZA00804431A patent/ZA804431B/xx unknown
- 1980-07-24 CH CH5655/80A patent/CH654704A5/de not_active IP Right Cessation
- 1980-07-24 JP JP10183180A patent/JPS5650654A/ja active Pending
- 1980-07-25 CA CA000356996A patent/CA1160782A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH654704A5 (en) | 1986-02-28 |
| JPS5650654A (en) | 1981-05-07 |
| AU536058B2 (en) | 1984-04-19 |
| ZA804431B (en) | 1981-08-26 |
| PT71559A (en) | 1980-08-01 |
| BR8004586A (pt) | 1981-02-03 |
| AU6041480A (en) | 1981-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |