GB1258487A - - Google Patents
Info
- Publication number
- GB1258487A GB1258487A GB1258487DA GB1258487A GB 1258487 A GB1258487 A GB 1258487A GB 1258487D A GB1258487D A GB 1258487DA GB 1258487 A GB1258487 A GB 1258487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pairs
- network
- group
- subgroups
- pair
- 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)
- Data Exchanges In Wide-Area Networks (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
1,258,487. Automatic exchange systems. SIEMENS A.G. 15 Oct., 1969 [16 Oct., 1968], No. 50605/69. Addition to 1,058,893. Heading H4K. A folded network as claimed in claim 1 of parent Specification, which is such that a connection is set up over as few stages of the network as the spacing of the inlets to be connected allows, is adapted for four-wire working and avoids the reversal of pairs by switching in junctors, in order that each send pair should be connected to an outgoing receive pair and each receive pair to an outgoing send pair, and achieves this by providing within each group of circuits terminated on the network some circuits with their send pairs and receive pairs terminated reversely with respect to the others in the group. As shown, a connection between a line Lxal of subgroup XA of group X, if directed to a group Y, must be terminated on a line of subgroup YB such as Lyb1; the order of connection of the pairs in the B subgroups being reversed as compared with the pairs in the A subgroups. Connections between lines of like subgroups, such as lines Lxb1 and Lyb1, can be effected by setting up two connections in tandem over network K with the inclusion of a reversing junction such as R. The network K employs multiswitches, by which is meant relay crosspoint, crossbar, or crossed-coil switches.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681803389 DE1803389B2 (en) | 1968-10-16 | 1968-10-16 | CIRCUIT ARRANGEMENT FOR REMOTE COMMUNICATION SYSTEMS, IN PARTICULAR TELEPHONE SWITCHING SYSTEMS, WITH A COUPLING FIELD FOR FOUR-WIRE CONNECTION OF MESSAGE CIRCUITS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1258487A true GB1258487A (en) | 1971-12-30 |
Family
ID=5710657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1258487D Expired GB1258487A (en) | 1968-10-16 | 1969-10-15 |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5537157B1 (en) |
| AT (1) | AT294930B (en) |
| BE (1) | BE740380A (en) |
| DE (1) | DE1803389B2 (en) |
| FR (1) | FR2027523A6 (en) |
| GB (1) | GB1258487A (en) |
| NL (1) | NL151238B (en) |
| SE (1) | SE346671B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1560192A (en) * | 1977-02-07 | 1980-01-30 | Int Standard Electric Corp | Continuously expandable switching network |
-
1968
- 1968-10-16 DE DE19681803389 patent/DE1803389B2/en active Pending
-
1969
- 1969-10-06 NL NL6915092A patent/NL151238B/en unknown
- 1969-10-14 FR FR6935217A patent/FR2027523A6/fr not_active Expired
- 1969-10-14 AT AT968569A patent/AT294930B/en not_active IP Right Cessation
- 1969-10-15 GB GB1258487D patent/GB1258487A/en not_active Expired
- 1969-10-16 BE BE740380D patent/BE740380A/xx unknown
- 1969-10-16 JP JP8226369A patent/JPS5537157B1/ja active Pending
- 1969-10-16 SE SE1424069A patent/SE346671B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5537157B1 (en) | 1980-09-26 |
| DE1803389A1 (en) | 1970-07-09 |
| BE740380A (en) | 1970-04-16 |
| SE346671B (en) | 1972-07-10 |
| AT294930B (en) | 1971-12-10 |
| DE1803389B2 (en) | 1971-07-01 |
| FR2027523A6 (en) | 1970-10-02 |
| NL151238B (en) | 1976-10-15 |
| NL6915092A (en) | 1970-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1013594A (en) | Improvements in communication switching systems | |
| NL165017C (en) | COMMUNICATION SWITCH, IN PARTICULAR TELEPHONE SWITCHING SYSTEM. | |
| GB1068227A (en) | Improvements in or relating to switching networks for use in telecommunications installations | |
| SE327219B (en) | ||
| GB1258487A (en) | ||
| ES377981A1 (en) | Selection systems for electrical circuits or equipments | |
| US3573388A (en) | Marker controlled electronic crosspoint | |
| GB1110367A (en) | Switching networks | |
| GB1165526A (en) | Improvements in or relating to Automatic Telephone Exchanges | |
| US3213202A (en) | Time division multiplex telecommunication switching systems | |
| ES324839A1 (en) | Circuit provision for telecommunication link installations, particularly for telephone installations, with coupling fields. (Machine-translation by Google Translate, not legally binding) | |
| GB1130982A (en) | Improvements in or relating to telecommunications exchange systems | |
| GB1065902A (en) | Improvements to selection systems for circuits or electrical equipments | |
| GB1480221A (en) | Telephone intercommunication systems | |
| GB1250429A (en) | ||
| CH537134A (en) | Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, for four-wire connection through switching via coupling fields | |
| CH501347A (en) | Coupling network in telecommunications, in particular telephone switching systems, with several multi-stage relay coupling arrangements connected in series | |
| ES324838A1 (en) | Circuit provision for telecommunication link installations, particularly for telephone installations with coupling fields. (Machine-translation by Google Translate, not legally binding) | |
| JPS55125790A (en) | Switch network having connecting line inverter | |
| GB804980A (en) | Improvements in or relating to multiple contact switches | |
| GB1340268A (en) | Tdm telecommunications exchange systems | |
| GB833933A (en) | Improvements in or relating to an arrangement for effecting a selective connection between a pair of lines | |
| NL153058B (en) | CIRCUIT FOR COUPLING FIELDS WITH COUPLING RELAYS, WHICH HAVE TWO STABLE SWITCHING POSITIONS (TRACTOR COUPLING FIELDS), IN A TELECOMMUNICATIONS, ESPECIALLY TELEPHONE CONNECTION SYSTEM. | |
| GB1344178A (en) | Elecommunications exchange systems | |
| AT309540B (en) | Circuit arrangement for centrally controlled telecommunications switching systems, in particular telephone switching systems, with two-way connections |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE | Patent expired |