GB2237702B - Improvements in or relating to a private automatic branch exchange (PABX) telephone system - Google Patents
Improvements in or relating to a private automatic branch exchange (PABX) telephone systemInfo
- Publication number
- GB2237702B GB2237702B GB9020040A GB9020040A GB2237702B GB 2237702 B GB2237702 B GB 2237702B GB 9020040 A GB9020040 A GB 9020040A GB 9020040 A GB9020040 A GB 9020040A GB 2237702 B GB2237702 B GB 2237702B
- Authority
- GB
- United Kingdom
- Prior art keywords
- pabx
- relating
- telephone system
- branch exchange
- automatic branch
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE297089A IE62326B1 (en) | 1989-09-18 | 1989-09-18 | Improvements in or relating to a private automatic branch exchange (pabx) telephone system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9020040D0 GB9020040D0 (en) | 1990-10-24 |
GB2237702A GB2237702A (en) | 1991-05-08 |
GB2237702B true GB2237702B (en) | 1994-02-23 |
Family
ID=11037260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9020040A Expired - Fee Related GB2237702B (en) | 1989-09-18 | 1990-09-13 | Improvements in or relating to a private automatic branch exchange (PABX) telephone system |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE1001879A7 (en) |
GB (1) | GB2237702B (en) |
IE (1) | IE62326B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19844672B4 (en) * | 1998-09-29 | 2006-03-02 | Siemens Ag | Program-controlled communication system for switching connected analogue and digital communication terminals |
-
1989
- 1989-09-18 IE IE297089A patent/IE62326B1/en not_active IP Right Cessation
- 1989-11-20 BE BE8901238A patent/BE1001879A7/en not_active IP Right Cessation
-
1990
- 1990-09-13 GB GB9020040A patent/GB2237702B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9020040D0 (en) | 1990-10-24 |
IE892970A1 (en) | 1991-03-27 |
BE1001879A7 (en) | 1990-04-03 |
IE62326B1 (en) | 1995-01-25 |
GB2237702A (en) | 1991-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940913 |