JPS5444406A - Relay system for selection signal - Google Patents
Relay system for selection signalInfo
- Publication number
- JPS5444406A JPS5444406A JP11095377A JP11095377A JPS5444406A JP S5444406 A JPS5444406 A JP S5444406A JP 11095377 A JP11095377 A JP 11095377A JP 11095377 A JP11095377 A JP 11095377A JP S5444406 A JPS5444406 A JP S5444406A
- Authority
- JP
- Japan
- Prior art keywords
- ext
- main line
- pbrst
- delivered
- trunk
- 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
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)
Abstract
PURPOSE:To prevent the misconnection at exchanging stations and to reduce the amount of hardware, by detecting the start finish signal from the main line and making heard it to directly the caller in PBX. CONSTITUTION:At the calling of extension telephone set EXT, EXT is connected to the terminal A of the PB register sender trunk PBRST and the dial tone trunk DTT is connected to the terminal B of PBRST with the control unit CC, dial tone is delivered to EXT, the specific number for main line calling from EXT is delivered to EXT, the specific number of main line calling from EXT is delivered to the CC via PBRST, and CC catches the main line trunk COOGT and the communication path 3 and delivers start signal to the exchanging station. Further, when the start finish signal is returned from the exchanging station, it is delivered to EXT via COOGT, train 3, PBRST and train 1. Thus, EXT performs desired call to the main line CO.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11095377A JPS5444406A (en) | 1977-09-14 | 1977-09-14 | Relay system for selection signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11095377A JPS5444406A (en) | 1977-09-14 | 1977-09-14 | Relay system for selection signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5444406A true JPS5444406A (en) | 1979-04-07 |
JPS5750119B2 JPS5750119B2 (en) | 1982-10-26 |
Family
ID=14548715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11095377A Granted JPS5444406A (en) | 1977-09-14 | 1977-09-14 | Relay system for selection signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5444406A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48103105A (en) * | 1972-04-10 | 1973-12-25 | ||
JPS522106A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Loop around connection control system |
-
1977
- 1977-09-14 JP JP11095377A patent/JPS5444406A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48103105A (en) * | 1972-04-10 | 1973-12-25 | ||
JPS522106A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Loop around connection control system |
Also Published As
Publication number | Publication date |
---|---|
JPS5750119B2 (en) | 1982-10-26 |
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