CA1061482A - Channel switching unit for a telephone switching centre and switching arrangement utilising such units - Google Patents
Channel switching unit for a telephone switching centre and switching arrangement utilising such unitsInfo
- Publication number
- CA1061482A CA1061482A CA238,606A CA238606A CA1061482A CA 1061482 A CA1061482 A CA 1061482A CA 238606 A CA238606 A CA 238606A CA 1061482 A CA1061482 A CA 1061482A
- Authority
- CA
- Canada
- Prior art keywords
- switching
- input
- channel
- output
- inputs
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000011664 signaling Effects 0.000 claims description 34
- 238000009826 distribution Methods 0.000 claims description 21
- 238000013519 translation Methods 0.000 claims description 8
- 108091006146 Channels Proteins 0.000 claims 33
- 230000000875 corresponding effect Effects 0.000 abstract description 13
- 239000011159 matrix material Substances 0.000 description 10
- 230000007704 transition Effects 0.000 description 10
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 230000014616 translation Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000002674 ointment Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000011514 reflex Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000004243 E-number Substances 0.000 description 1
- 235000019227 E-number Nutrition 0.000 description 1
- 244000228957 Ferula foetida Species 0.000 description 1
- 101000934372 Homo sapiens Macrosialin Proteins 0.000 description 1
- 102100025136 Macrosialin Human genes 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004106 carminic acid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- STEPQTYSZVCJPV-UHFFFAOYSA-N metazachlor Chemical compound CC1=CC=CC(C)=C1N(C(=O)CCl)CN1N=CC=C1 STEPQTYSZVCJPV-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 235000021251 pulses Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- HLCHESOMJVGDSJ-UHFFFAOYSA-N thiq Chemical compound C1=CC(Cl)=CC=C1CC(C(=O)N1CCC(CN2N=CN=C2)(CC1)C1CCCCC1)NC(=O)C1NCC2=CC=CC=C2C1 HLCHESOMJVGDSJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7436490A FR2290116A1 (fr) | 1974-10-31 | 1974-10-31 | Circuit de voie pour centre de commutation telephonique et dispositifs de commutation utilisant ce circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1061482A true CA1061482A (en) | 1979-08-28 |
Family
ID=9144614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA238,606A Expired CA1061482A (en) | 1974-10-31 | 1975-10-27 | Channel switching unit for a telephone switching centre and switching arrangement utilising such units |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4024350A (en, 2012) |
| JP (1) | JPS5168108A (en, 2012) |
| CA (1) | CA1061482A (en, 2012) |
| CH (1) | CH608674A5 (en, 2012) |
| DD (2) | DD125233A5 (en, 2012) |
| DE (1) | DE2548280C3 (en, 2012) |
| FR (1) | FR2290116A1 (en, 2012) |
| GB (1) | GB1511498A (en, 2012) |
| NL (1) | NL7512712A (en, 2012) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130733A (en) * | 1977-01-10 | 1978-12-19 | International Telephone & Telegraph Corp. | Frequency channel units for a FDM system |
| JPS5476611U (en, 2012) * | 1977-11-10 | 1979-05-31 | ||
| US4228401A (en) * | 1977-12-22 | 1980-10-14 | Communications Satellite Corporation | Communication satellite transponder interconnection utilizing variable bandpass filter |
| DE2903943A1 (de) * | 1979-02-02 | 1980-08-07 | Licentia Gmbh | Verfahren zum durchschalten von kanaelen oder kanalbuendeln zwischen zwei vormodulationssystemen mit unterschiedlicher vorkanallage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3364311A (en) * | 1964-02-07 | 1968-01-16 | Nasa Usa | Elimination of frequency shift in a multiplex communication system |
| US3733438A (en) * | 1971-03-01 | 1973-05-15 | Bell Telephone Labor Inc | Carrier supply for frequency division multiplexed systems |
| FR2204335A5 (en, 2012) * | 1972-10-24 | 1974-05-17 | Cit Alcatel |
-
1974
- 1974-10-31 FR FR7436490A patent/FR2290116A1/fr active Granted
-
1975
- 1975-10-27 CA CA238,606A patent/CA1061482A/en not_active Expired
- 1975-10-28 DE DE2548280A patent/DE2548280C3/de not_active Expired
- 1975-10-30 DD DD189140A patent/DD125233A5/xx unknown
- 1975-10-30 GB GB45098/75A patent/GB1511498A/en not_active Expired
- 1975-10-30 NL NL7512712A patent/NL7512712A/xx not_active Application Discontinuation
- 1975-10-30 DD DD195070A patent/DD126335A5/xx unknown
- 1975-10-30 CH CH1406975A patent/CH608674A5/xx not_active IP Right Cessation
- 1975-10-30 US US05/627,454 patent/US4024350A/en not_active Expired - Lifetime
- 1975-10-31 JP JP50131332A patent/JPS5168108A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2548280A1 (de) | 1976-05-20 |
| NL7512712A (nl) | 1976-05-04 |
| DE2548280C3 (de) | 1979-11-15 |
| DD126335A5 (en, 2012) | 1977-07-13 |
| JPS5168108A (en) | 1976-06-12 |
| US4024350A (en) | 1977-05-17 |
| GB1511498A (en) | 1978-05-17 |
| DE2548280B2 (de) | 1979-03-22 |
| DD125233A5 (en, 2012) | 1977-04-06 |
| CH608674A5 (en, 2012) | 1979-01-15 |
| FR2290116B1 (en, 2012) | 1982-03-19 |
| FR2290116A1 (fr) | 1976-05-28 |
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