JPS56132090A - Trunk line number collation system - Google Patents
Trunk line number collation systemInfo
- Publication number
- JPS56132090A JPS56132090A JP3559080A JP3559080A JPS56132090A JP S56132090 A JPS56132090 A JP S56132090A JP 3559080 A JP3559080 A JP 3559080A JP 3559080 A JP3559080 A JP 3559080A JP S56132090 A JPS56132090 A JP S56132090A
- Authority
- JP
- Japan
- Prior art keywords
- trunk line
- line number
- dial
- trunk
- ext
- 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.)
- Pending
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 simplify the trunk line number collating circuit, by equalizing the pattern of receiving and storing operations of the dial signal for trunk line number collation from the extension subscriber to the pattern of receiving and storing operations of the normal dial signal. CONSTITUTION:When push-button dial telephone set EXT which is busy to the trunk line is hooked, trunk COT is acquired. When dial button ''0'' is depressed in this state, the dial signal corresponding to it is received, and the trunk line which this EXT is using is displayed on trunk line display board CLD, and thus, the trunk line number is confirmed. Next, when dial button ''1'' is depressed, the ''1'' dial signal is received by PB receiver PBRE and is read into central control device CC through oscillating register OR. Then, central control device CC extinguishes said display by the software processing and connects the trunk line suspended by trunk COT to EXT again. Consequently, a special circuit for trunk line number collation is not required.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3559080A JPS56132090A (en) | 1980-03-19 | 1980-03-19 | Trunk line number collation system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3559080A JPS56132090A (en) | 1980-03-19 | 1980-03-19 | Trunk line number collation system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56132090A true JPS56132090A (en) | 1981-10-16 |
Family
ID=12445996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3559080A Pending JPS56132090A (en) | 1980-03-19 | 1980-03-19 | Trunk line number collation system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56132090A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60259045A (en) * | 1984-06-06 | 1985-12-21 | Meisei Electric Co Ltd | System for collating external line and system of external line transfer |
JPS6166454A (en) * | 1984-09-10 | 1986-04-05 | Nec Eng Ltd | Trunk line number checking system |
-
1980
- 1980-03-19 JP JP3559080A patent/JPS56132090A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60259045A (en) * | 1984-06-06 | 1985-12-21 | Meisei Electric Co Ltd | System for collating external line and system of external line transfer |
JPS6166454A (en) * | 1984-09-10 | 1986-04-05 | Nec Eng Ltd | Trunk line number checking system |
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