CA1172737A - Analog subscriber/trunk module with shared ringing source and ring trip - Google Patents
Analog subscriber/trunk module with shared ringing source and ring tripInfo
- Publication number
- CA1172737A CA1172737A CA000374135A CA374135A CA1172737A CA 1172737 A CA1172737 A CA 1172737A CA 000374135 A CA000374135 A CA 000374135A CA 374135 A CA374135 A CA 374135A CA 1172737 A CA1172737 A CA 1172737A
- Authority
- CA
- Canada
- Prior art keywords
- ringing
- lines
- signals
- trunks
- line
- 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
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 24
- 230000011664 signaling Effects 0.000 claims description 16
- 230000004044 response Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 230000006854 communication Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000002950 deficient Effects 0.000 abstract description 2
- 238000010615 ring circuit Methods 0.000 description 19
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 208000003251 Pruritus Diseases 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 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
- H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephone Function (AREA)
- Optical Communication System (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13575680A | 1980-03-31 | 1980-03-31 | |
| US135,756 | 1980-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172737A true CA1172737A (en) | 1984-08-14 |
Family
ID=22469517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000374135A Expired CA1172737A (en) | 1980-03-31 | 1981-03-30 | Analog subscriber/trunk module with shared ringing source and ring trip |
Country Status (11)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2128449B (en) * | 1982-10-08 | 1985-12-11 | Standard Telephones Cables Ltd | Tone generation circuit |
| US4656659A (en) * | 1985-07-18 | 1987-04-07 | Itt Corporation | Programmable ring signal generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2129281A5 (enrdf_load_stackoverflow) * | 1971-03-11 | 1972-10-27 | Ibm France | |
| US4097694A (en) * | 1975-07-09 | 1978-06-27 | Toa Electric Company, Ltd. | Time-division telephone system embodying trunks having demodulating-adder circuits |
| JPS53124008A (en) * | 1977-04-06 | 1978-10-30 | Oki Electric Ind Co Ltd | Call signal transmission system |
-
1981
- 1981-03-26 AU AU68765/81A patent/AU541648B2/en not_active Ceased
- 1981-03-26 MX MX186568A patent/MX150197A/es unknown
- 1981-03-27 BR BR8101844A patent/BR8101844A/pt not_active IP Right Cessation
- 1981-03-28 EP EP81102363A patent/EP0037540B1/de not_active Expired
- 1981-03-28 AT AT81102363T patent/ATE17294T1/de not_active IP Right Cessation
- 1981-03-28 DE DE8181102363T patent/DE3173346D1/de not_active Expired
- 1981-03-30 CA CA000374135A patent/CA1172737A/en not_active Expired
- 1981-03-31 JP JP4658281A patent/JPS56152361A/ja active Granted
- 1981-03-31 BE BE2/59088A patent/BE888193A/nl not_active IP Right Cessation
- 1981-03-31 ES ES500922A patent/ES500922A0/es active Granted
- 1981-03-31 NO NO811094A patent/NO155598C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0342534B2 (enrdf_load_stackoverflow) | 1991-06-27 |
| AU6876581A (en) | 1981-10-08 |
| NO155598B (no) | 1987-01-12 |
| NO155598C (no) | 1987-04-22 |
| ES8206125A1 (es) | 1982-08-16 |
| EP0037540A3 (en) | 1982-09-15 |
| BR8101844A (pt) | 1981-10-06 |
| MX150197A (es) | 1984-03-29 |
| NO811094L (no) | 1981-10-01 |
| DE3173346D1 (en) | 1986-02-13 |
| AU541648B2 (en) | 1985-01-17 |
| JPS56152361A (en) | 1981-11-25 |
| EP0037540A2 (de) | 1981-10-14 |
| ES500922A0 (es) | 1982-08-16 |
| ATE17294T1 (de) | 1986-01-15 |
| EP0037540B1 (de) | 1986-01-02 |
| BE888193A (nl) | 1981-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |