GB1146686A - Improvements in or relating to telecommunication switching systems - Google Patents
Improvements in or relating to telecommunication switching systemsInfo
- Publication number
- GB1146686A GB1146686A GB13223/66D GB1322365D GB1146686A GB 1146686 A GB1146686 A GB 1146686A GB 13223/66 D GB13223/66 D GB 13223/66D GB 1322365 D GB1322365 D GB 1322365D GB 1146686 A GB1146686 A GB 1146686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- array
- switches
- row
- inlets
- grading
- 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
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
1,146,686. Automatic exchange systems. H. M. POSTMASTER GENERAL. 24 March, 1966 [29 March, 1965], No. 13223/65. Heading H4K. An array of switches, each having a number of outlets with access to a number of inlets, has the inlets multipled according to a grading scheme in which each multiple connects corresponding inlets of a unique combination of switches. The grading scheme is shown in Fig. 1 as applied to a 5 x 5 array of 5 x 5 relay or cross-bar switches. The sixth row A6 to E6 is to be ignored for the moment. The horizontals of each switch serve a corresponding group of five subscribers; the array serving 125 subscribers in total. The grading is effected by staggering the connections between verticals of adjacent rows; the xth vertical of any switch in one row being connected to the corresponding vertical of the (x-p)th switch in advance in the adjacent lower row; p being an integer and the switches of a row being taken cyclically. Such a grading scheme repeats itself every 5 rows. Additional rows such as A6 to E6 may be added but expansion of the array is preferably made by wiring together corresponding multiples of identical 5 x 5 arrays. The grading scheme is also applied to 7 x 7 switches in a 7 x 7 array and 9 x 9 switches in a 9 x 9 array.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1322365 | 1965-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1146686A true GB1146686A (en) | 1969-03-26 |
Family
ID=10019062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13223/66D Expired GB1146686A (en) | 1965-03-29 | 1965-03-29 | Improvements in or relating to telecommunication switching systems |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3469035A (en) |
| JP (1) | JPS5231683B1 (en) |
| DE (1) | DE1487848C3 (en) |
| GB (1) | GB1146686A (en) |
| IL (1) | IL25466A (en) |
| MY (1) | MY7000173A (en) |
| NL (1) | NL6604137A (en) |
| SE (1) | SE347415B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701112A (en) * | 1971-06-04 | 1972-10-24 | Bell Telephone Labor Inc | Balanced, incomplete, block designs for circuit links interconnecting switching network stages |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945211A (en) * | 1957-12-10 | 1960-07-12 | Itt | Non-blocking link-access switching system |
| GB946673A (en) * | 1959-11-25 | 1964-01-15 | Ass Elect Ind | Improvements relating to telephone and like switching systems |
-
1965
- 1965-03-29 GB GB13223/66D patent/GB1146686A/en not_active Expired
-
1966
- 1966-03-26 JP JP41018656A patent/JPS5231683B1/ja active Pending
- 1966-03-27 IL IL25466A patent/IL25466A/en unknown
- 1966-03-28 DE DE1487848A patent/DE1487848C3/en not_active Expired
- 1966-03-28 US US537838A patent/US3469035A/en not_active Expired - Lifetime
- 1966-03-29 SE SE04195/66A patent/SE347415B/xx unknown
- 1966-03-29 NL NL6604137A patent/NL6604137A/xx unknown
-
1970
- 1970-12-31 MY MY1970173A patent/MY7000173A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1487848B2 (en) | 1972-05-04 |
| IL25466A (en) | 1971-03-24 |
| US3469035A (en) | 1969-09-23 |
| DE1487848A1 (en) | 1969-10-09 |
| MY7000173A (en) | 1970-12-31 |
| NL6604137A (en) | 1966-09-30 |
| DE1487848C3 (en) | 1978-08-24 |
| JPS5231683B1 (en) | 1977-08-16 |
| SE347415B (en) | 1972-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES407535A1 (en) | Time division switching network employing space division stages | |
| US3980834A (en) | Multi-stage connection switch frame | |
| GB1146686A (en) | Improvements in or relating to telecommunication switching systems | |
| US3546390A (en) | Control equipment for multi-stage crosspoint arrangements | |
| GB1021818A (en) | Switching network | |
| GB1519807A (en) | Telecomunications exchange system switching networks | |
| CA993547A (en) | Crosspoint matrix arrangement for space-division communication switching network | |
| GB1336077A (en) | Telecommunications exchange systems | |
| GB1275892A (en) | Signal switching device | |
| GB1433160A (en) | Multistage switching networks for use in telecommunications exchanges | |
| US3213202A (en) | Time division multiplex telecommunication switching systems | |
| GB1050190A (en) | ||
| US4093828A (en) | Switching networks, e.g. space-division concentrators | |
| ES400030A1 (en) | Time division multiplex exchanges | |
| GB1313229A (en) | Time-division multiplex telecommunications exchange systems | |
| GB1271109A (en) | Improvements in or relating to the synchronisation of oscillators in telecommunications systems | |
| GB1133644A (en) | Improvements in or relating to matrix switching networks | |
| CA995836A (en) | Crosspoint switch comprising bistable crosspoints | |
| GB1078337A (en) | Automatic telecommunication exchange | |
| GB989337A (en) | Improvements relating to automatic telephone exchange systems | |
| GB1127384A (en) | Automatic telecommunications exchange | |
| SE336156B (en) | ||
| GB1270908A (en) | Telecommunication system | |
| GB1293386A (en) | Switching networks for telecommunications switching system | |
| GB1500696A (en) | Tdm communications systems |