GB2019697A - Function selection apparatus for a centrally controlled telephone exchange - Google Patents
Function selection apparatus for a centrally controlled telephone exchangeInfo
- Publication number
- GB2019697A GB2019697A GB7913874A GB7913874A GB2019697A GB 2019697 A GB2019697 A GB 2019697A GB 7913874 A GB7913874 A GB 7913874A GB 7913874 A GB7913874 A GB 7913874A GB 2019697 A GB2019697 A GB 2019697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- main state
- transition
- main
- centrally controlled
- state transition
- 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.)
- Granted
Links
- 230000007704 transition Effects 0.000 abstract 8
- 230000000007 visual effect Effects 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
For connection establishment in a centrally controlled telephone system, switching functions are effected between main states and each main state transition corresponds to a plurality of intermediate state transitions. Instead of storing all possible intermediate states including those for auxiliary functions which require visual or audible indication, only those intermediate states (ZZ1 to ZZ4) are held in a state store (ZL) which are essential for the main state transitions. A target main state selector (ZiZE) enables each main state transition (HZ3 to HZ4) to be defined for determination of the intermediate states essential for that transition and also for a setting-up routine (ER) to determine the auxiliary functions associated with, and in time for completion of, the main state transition. The initial or current main state of a transition is indicated by units (AG1 to AGn) respectively associated with traffic classes and to which a request (A) from a central control unit for the main state transition is allocated. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2817567A DE2817567C2 (en) | 1978-04-21 | 1978-04-21 | Process for handling switching processes in telephone systems, in particular telephone private branch exchanges |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2019697A true GB2019697A (en) | 1979-10-31 |
GB2019697B GB2019697B (en) | 1982-03-10 |
Family
ID=6037715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7913874A Expired GB2019697B (en) | 1978-04-21 | 1979-04-20 | Function selection apparatus for a centrally controlled telephone exchange |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT381203B (en) |
CH (1) | CH650372A5 (en) |
DE (1) | DE2817567C2 (en) |
FR (1) | FR2423942A1 (en) |
GB (1) | GB2019697B (en) |
IT (1) | IT1112432B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0285003A2 (en) * | 1987-03-31 | 1988-10-05 | Bull HN Information Systems Inc. | Apparatus and method controlled to function in a series of states of operation for effecting data transfer in a communication system |
EP0360726A2 (en) * | 1988-09-19 | 1990-03-28 | ROLM Systems | Communications network routing and management system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2818931C3 (en) * | 1978-04-28 | 1981-07-30 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for centrally controlled telephone exchange systems, in particular telephone branch exchange systems with a speech path coupling network |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2543029C3 (en) * | 1975-09-26 | 1982-09-09 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for a terminal which controls a large number of functions and can be connected to a telephone system |
DE2602159B2 (en) * | 1976-01-21 | 1980-11-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching networks and with central and partially central facilities |
DE2647404C2 (en) * | 1976-10-20 | 1978-08-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Circuit arrangement for centrally controlled telecommunications switching systems with a central control unit and partial controls |
DE2724077B2 (en) * | 1977-05-27 | 1980-09-25 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Arrangement for handling switching processes in telephone systems, in particular telephone branch exchange systems |
-
1978
- 1978-04-21 DE DE2817567A patent/DE2817567C2/en not_active Expired
-
1979
- 1979-04-06 CH CH3278/79A patent/CH650372A5/en not_active IP Right Cessation
- 1979-04-19 AT AT0295779A patent/AT381203B/en not_active IP Right Cessation
- 1979-04-19 IT IT21963/79A patent/IT1112432B/en active
- 1979-04-20 FR FR7910040A patent/FR2423942A1/en active Granted
- 1979-04-20 GB GB7913874A patent/GB2019697B/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0285003A2 (en) * | 1987-03-31 | 1988-10-05 | Bull HN Information Systems Inc. | Apparatus and method controlled to function in a series of states of operation for effecting data transfer in a communication system |
EP0285003A3 (en) * | 1987-03-31 | 1990-07-18 | Honeywell Bull Inc. | Firmware state machine |
EP0360726A2 (en) * | 1988-09-19 | 1990-03-28 | ROLM Systems | Communications network routing and management system |
EP0360726A3 (en) * | 1988-09-19 | 1992-08-05 | ROLM Systems | Communications network routing and management system |
Also Published As
Publication number | Publication date |
---|---|
DE2817567A1 (en) | 1979-10-31 |
CH650372A5 (en) | 1985-07-15 |
IT7921963A0 (en) | 1979-04-19 |
FR2423942A1 (en) | 1979-11-16 |
FR2423942B1 (en) | 1982-06-04 |
IT1112432B (en) | 1986-01-13 |
ATA295779A (en) | 1986-01-15 |
AT381203B (en) | 1986-09-10 |
DE2817567C2 (en) | 1983-12-29 |
GB2019697B (en) | 1982-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |