BG50400A3 - Device for switching several telephone subscribers to an urban automatic telephone exchange by a single telephone line - Google Patents
Device for switching several telephone subscribers to an urban automatic telephone exchange by a single telephone lineInfo
- Publication number
- BG50400A3 BG50400A3 BG9487491A BG9487491A BG50400A3 BG 50400 A3 BG50400 A3 BG 50400A3 BG 9487491 A BG9487491 A BG 9487491A BG 9487491 A BG9487491 A BG 9487491A BG 50400 A3 BG50400 A3 BG 50400A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- bloc
- telephone
- exchange
- telephone line
- line
- Prior art date
Links
Abstract
This device is used n automatic telephonic exchanges. It enables the connecting of new phone lines within the already available phone cells in the exchange through the collective use of the existing lines, whereas protection from incorrect billing is provided. The device consists of an exchange and subscriber's bloc connected to a telephone line. The exchange bloc is operated by a pre-recorded program in an operation bloc and ensures the inclusion of any subscriber set of the telephone exchange, connected to the bloc, with the telephone line. The subscriber bloc, which is managed by the signals sent along the line from the exchange bloc, allows the control bloc to connect any telephone linked to the bloc. The connection is always coordinated in such a way that each telephone line is connected to the assigned subscriber set for every incoming and outgoing call.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9487491A BG50400A3 (en) | 1991-07-23 | 1991-07-23 | Device for switching several telephone subscribers to an urban automatic telephone exchange by a single telephone line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9487491A BG50400A3 (en) | 1991-07-23 | 1991-07-23 | Device for switching several telephone subscribers to an urban automatic telephone exchange by a single telephone line |
Publications (1)
Publication Number | Publication Date |
---|---|
BG50400A3 true BG50400A3 (en) | 1992-07-15 |
Family
ID=3923905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG9487491A BG50400A3 (en) | 1991-07-23 | 1991-07-23 | Device for switching several telephone subscribers to an urban automatic telephone exchange by a single telephone line |
Country Status (1)
Country | Link |
---|---|
BG (1) | BG50400A3 (en) |
-
1991
- 1991-07-23 BG BG9487491A patent/BG50400A3/en unknown
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