GB1205307A - Improvements in or relating to telecommunications systems - Google Patents
Improvements in or relating to telecommunications systemsInfo
- Publication number
- GB1205307A GB1205307A GB4939768A GB4939768A GB1205307A GB 1205307 A GB1205307 A GB 1205307A GB 4939768 A GB4939768 A GB 4939768A GB 4939768 A GB4939768 A GB 4939768A GB 1205307 A GB1205307 A GB 1205307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- data
- bus
- equipments
- control circuit
- stored
- 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
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
- H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
- H04Q3/54508—Configuration, initialisation
- H04Q3/54533—Configuration data, translation, passwords, databases
Landscapes
- Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Exchange Systems With Centralized Control (AREA)
- Time-Division Multiplex Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
1,205,307. Automatic exchange systems. SIEMENS A.G. 18 Oct., 1968 [1 Dec., 1967; 26 July, 1968], No. 49397/68. Heading H4K. In a stored programme controlled exchange in which the peripheral equipments are arranged in groups each of which has its own control circuit, i.e. effectively a plurality of centrally controlled PBXs, communication between the equipments and the control circuit is effected over a common bus which starts and terminates in the control circuit and to which the equipments are selectively connectible. The ends of the bus are connected by a comparator so that information sent into the bus can be compared with information received therefrom whereby a fault signal can be generated in the event of any discrepancy. The system forms part of that described in Specifications 1,205,305, 1,205,306, 1,205,308, 1,205,309 and 1,205,301. The individual equipments JG1-JGn each contain a plurality of senders (e.g. contacts such as s1) and receivers (e.g. relays such as E1), the equipments being selectively connectible to a space or frequency division multiplex bus U11 by relays Mo1 to Mon under the control of an identifier Jd in the group control circuit AS. Serial data from a central control is stored in sender SS prior to despatch in parallel form over bus U11 to the selected equipment. The accuracy of the data after it has traversed the bus and been received back in receiver ES is determined with the aid of comparator Vg. Parallel data from an equipment is converted into serial data by receiver ES for subsequent transmission to central control and is temporarily stored in VS. When data sending from the equipment stops, the stored data in VS is sent round the bus so that the efficacy of the latter can be checked. As an alternative to comparing the whole of the transmitted data with the received data, the parity of the former data may be determined and stored for later comparison with the parity of the received data thereby reducing the duration of the connection with central control and/or reducing the amount of storage space required in the control circuit (Fig. 4, not shown).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1088667A AT273242B (en) | 1967-12-01 | 1967-12-01 | Circuit arrangement for telecommunications systems, in particular telephone switching systems, with individual and shared devices |
AT732668A AT290632B (en) | 1967-12-01 | 1968-07-26 | Circuit arrangement for telecommunications systems, in particular telephone switching systems, with individual and shared devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1205307A true GB1205307A (en) | 1970-09-16 |
Family
ID=37734403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4939768A Expired GB1205307A (en) | 1967-12-01 | 1968-10-18 | Improvements in or relating to telecommunications systems |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT290632B (en) |
BE (1) | BE724700A (en) |
CH (1) | CH486815A (en) |
DE (1) | DE1811533B2 (en) |
FR (1) | FR1599097A (en) |
GB (1) | GB1205307A (en) |
NL (1) | NL6816490A (en) |
SE (1) | SE333755B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61264835A (en) * | 1985-05-17 | 1986-11-22 | Kawamura Denki Sangyo Kk | Optical fiber data link system |
-
1968
- 1968-07-26 AT AT732668A patent/AT290632B/en not_active IP Right Cessation
- 1968-10-18 GB GB4939768A patent/GB1205307A/en not_active Expired
- 1968-11-19 NL NL6816490A patent/NL6816490A/xx unknown
- 1968-11-28 DE DE19681811533 patent/DE1811533B2/en not_active Withdrawn
- 1968-11-29 FR FR1599097D patent/FR1599097A/fr not_active Expired
- 1968-11-29 CH CH1789868A patent/CH486815A/en not_active IP Right Cessation
- 1968-11-29 BE BE724700D patent/BE724700A/xx unknown
- 1968-12-02 SE SE1645768A patent/SE333755B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE724700A (en) | 1969-05-29 |
DE1811533A1 (en) | 1969-08-07 |
NL6816490A (en) | 1969-06-03 |
FR1599097A (en) | 1970-07-15 |
CH486815A (en) | 1970-02-28 |
DE1811533B2 (en) | 1971-04-01 |
SE333755B (en) | 1971-03-29 |
AT290632B (en) | 1971-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |