ZA794157B - Indirectly controlled message-switching system,especially a telephone exchange system equipped with time slot couplers - Google Patents
Indirectly controlled message-switching system,especially a telephone exchange system equipped with time slot couplersInfo
- Publication number
- ZA794157B ZA794157B ZA00794157A ZA794157A ZA794157B ZA 794157 B ZA794157 B ZA 794157B ZA 00794157 A ZA00794157 A ZA 00794157A ZA 794157 A ZA794157 A ZA 794157A ZA 794157 B ZA794157 B ZA 794157B
- Authority
- ZA
- South Africa
- Prior art keywords
- information
- items
- store
- ltu8
- ltu1
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Time-Division Multiplex Systems (AREA)
- Rehabilitation Tools (AREA)
- Television Systems (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
1. Indirectly controlled telecommunications exchange system, in particular telephone exchange system which is equipped with time channel couplers and comprises a control unit (GP1) for which items of information, which originate from a plurality of other swithing devices (LTU1 ... LTU8, CP, SESC, TSU, SEU), are regularly received in specific time intervals for their further processing, for which purpose the items of information are firstly stored in a buffer store (B) which processes buffer storage locations in assignment to the switching devices (LTU1 ... LTU8, CP, SESC, TSU, SEU), and consecutive items information which originate from the same switching device (LTU1 ... LTU8, CP, SESC, TSU, SEU) are compared with one another before, on the basis of changes of information, items of information are further processed by the control unit (GP1), characterized in that of the items of information which are present in time-interlocked time channels individually assigned to the switching devices (LTU1 ... LTU8, CP, SESC, TSU, SEU), one is received by a register (R) and supplied to a comparator (V), that in this connections, from one storage location of the buffer store (B), which is individually assigned to the relevant switching device (LTU1 ... LTU8, CP, SESC, TSU, SEU), the corresponding item of information, which has previously been stored therein, is read and is likewise fed to the comparator (V), that when these two items of information are not identical, the comparator (V) effects the storage of the item of information contained in the register (R) both into the read storage location of the buffer store (B) and also into a storage location of a FiFo-store (F), that the address of the currently used storage location of the buffer store (B) is stored in this storage location of the FiFo-store (F), that items of information and addresses contained in the FiFo-store (F) are collected by the master unit (SSP) of the control unit (GP1) in accordance with its operating rhythm for the further processing and fed to a main memory (MU) of the control unit (GP1), and that the addresses of storage locations of the buffer store (B) are converted into addresses of storage locations of the main memory (MU) with the aid of a converter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782834916 DE2834916A1 (en) | 1978-08-09 | 1978-08-09 | INDIRECTLY CONTROLLED SWITCHING SYSTEM, ESPECIALLY TELEPHONE SWITCHING SYSTEM EQUIPPED WITH TIME CHANNEL COUPLERS |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA794157B true ZA794157B (en) | 1980-08-27 |
Family
ID=6046606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00794157A ZA794157B (en) | 1978-08-09 | 1979-08-09 | Indirectly controlled message-switching system,especially a telephone exchange system equipped with time slot couplers |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0008065B1 (en) |
JP (1) | JPS5937635B2 (en) |
AT (1) | ATE2870T1 (en) |
DE (2) | DE2834916A1 (en) |
FI (1) | FI67985C (en) |
ZA (1) | ZA794157B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2451141A1 (en) * | 1979-03-08 | 1980-10-03 | Cit Alcatel | AUTOMATIC SWITCH WITH DIGITAL CONNECTION NETWORK |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH543207A (en) * | 1972-04-04 | 1973-10-15 | Generaldirektion Ptt Hasler Ag | Method for testing the multiplex lines in a centrally controlled digital telecommunications switching network |
IT1011782B (en) * | 1974-04-26 | 1977-02-10 | Cselt Centro Studi Lab Telecom | NUMERICAL RECOGNITION OF REPORTING CRITERIA |
FR2298915A2 (en) * | 1975-01-22 | 1976-08-20 | Cit Alcatel | ARTICULATION AND MANAGEMENT SYSTEM FOR TELECOMMUNICATIONS CENTRAL |
DE2526115A1 (en) * | 1975-06-11 | 1976-12-16 | Siemens Ag | Data transmission system between central and peripheral units - uses TDM with 500 microsecond cycle time divided into four time slots |
FR2335896A1 (en) * | 1975-12-19 | 1977-07-15 | Constr Telephoniques | SIGNALING EVENT TRANSFER SYSTEM |
IT1074180B (en) * | 1976-10-29 | 1985-04-17 | Sits Soc It Telecom Siemens | INTERFACE UNITS SUITABLE TO ALLOW THE EXCHANGE OF DATA BETWEEN A PROCESSOR AND A PERIPHERAL UNIT OPERATED ACCORDING TO THE PRINCIPLE OF THE TIME DIVISION |
US4127742A (en) * | 1977-09-01 | 1978-11-28 | International Telephone And Telegraph Corporation | Time division telecommunication system |
DE2744118A1 (en) | 1977-09-30 | 1979-04-12 | Siemens Ag | Telephone exchange with single interrogate unit for several lines - uses interrogate pulse trains of at least two different frequencies to increase unit's capacity |
-
1978
- 1978-08-09 DE DE19782834916 patent/DE2834916A1/en not_active Withdrawn
-
1979
- 1979-07-31 DE DE7979102728T patent/DE2965069D1/en not_active Expired
- 1979-07-31 AT AT79102728T patent/ATE2870T1/en not_active IP Right Cessation
- 1979-07-31 EP EP79102728A patent/EP0008065B1/en not_active Expired
- 1979-08-08 JP JP54100317A patent/JPS5937635B2/en not_active Expired
- 1979-08-08 FI FI792461A patent/FI67985C/en not_active IP Right Cessation
- 1979-08-09 ZA ZA00794157A patent/ZA794157B/en unknown
Also Published As
Publication number | Publication date |
---|---|
JPS5525298A (en) | 1980-02-22 |
EP0008065B1 (en) | 1983-03-23 |
DE2965069D1 (en) | 1983-04-28 |
FI792461A (en) | 1980-02-10 |
FI67985C (en) | 1985-06-10 |
ATE2870T1 (en) | 1983-04-15 |
JPS5937635B2 (en) | 1984-09-11 |
FI67985B (en) | 1985-02-28 |
EP0008065A1 (en) | 1980-02-20 |
DE2834916A1 (en) | 1980-02-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU1584088A (en) | Device for receiving and processing road information | |
EP0025225B1 (en) | Broadcast and alternate message time slot interchanger | |
BR8204154A (en) | DIPOSICATION OF CIRCUIT FOR TELECOMMUNICATION INSTALLATIONS OR SYSTEMS ESPECIALLY FOR TIME MULTIPLEXING TELECOMMUNICATION SYSTEMS | |
ZA794157B (en) | Indirectly controlled message-switching system,especially a telephone exchange system equipped with time slot couplers | |
DE3376696D1 (en) | Circuit arrangement for disc memory addressing in a data processing system, particularly a telegraphy and data switching system | |
GB1529086A (en) | Electronic tdm data switching systems | |
SE8902309L (en) | PROCEDURE THAT IN A DIGITAL TIME SELECTOR BETWEEN SUBSCRIBERS UNCONNECT BROADBAND CONNECTIONS AND A DEVICE FOR IMPLEMENTING THE PROCEDURE | |
ZA794159B (en) | Indirectly controlled message-switching system,especially a telephone exchange system equipped with time slot couplers | |
GB1029205A (en) | Improvements in or relating to communication systems | |
GR3019640T3 (en) | Circuit arrangement for a central controlled telecommunication exchange, especially a PCM telephone exchange, with a central coordination processor and decentralized terminal groups with group processors | |
JPS5564682A (en) | Buffer block return control system | |
GB1407139A (en) | Stored programme-controlled data exchange systems | |
JPS6478361A (en) | Data processing system | |
JPS5613857A (en) | Information transmission memory system | |
JPS5489434A (en) | Memory access control processing system | |
JPS5939191A (en) | Control signal distributing system | |
JPS6486699A (en) | Address control circuit | |
JPS55118290A (en) | Connection system for representative of extension | |
JPS5452910A (en) | Time-division exchange channel circuit | |
JPS575150A (en) | Commanding system for control information to terminal equipment | |
JPS6466758A (en) | Segment managing system for memory | |
JPS57103554A (en) | Control system of stack memory | |
JPS5744278A (en) | Selecting system of memory module | |
JPS57178448A (en) | Time-division multidirectional multiplex communication system | |
JPS6418861A (en) | Setting system for communication path number |