JPS6439898A - Private branch exchange equipped with extension calling function - Google Patents
Private branch exchange equipped with extension calling functionInfo
- Publication number
- JPS6439898A JPS6439898A JP19678287A JP19678287A JPS6439898A JP S6439898 A JPS6439898 A JP S6439898A JP 19678287 A JP19678287 A JP 19678287A JP 19678287 A JP19678287 A JP 19678287A JP S6439898 A JPS6439898 A JP S6439898A
- Authority
- JP
- Japan
- Prior art keywords
- calling
- extension
- telephone set
- tone
- extension telephone
- 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
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To execute a confirmation to a waiting person by equipping a means to detect a hooking in a calling mutually between extensions and a means to send a loud tone for calling the extension with the succeeding dial operation of a special number. CONSTITUTION:A central control unit 7, which receives a notification from a line circuit 3 to detect the hooking of a first extension telephone set 1, connects the first line circuit 3 and an outgoing register 6 through a main switch 5. Continuously, when dial information which is dialed are discriminated to be the special number for an extension calling by the user of the first extension telephone set 1, the outgoing register 6 is restored to be original. The central control unit 7 sends a ring-back tone, which is a normal calling tone, to the first extension telephone set 1 by using a first equipment 8 for sending various types of tones. To a second extension telephone set 2, the calling tone, which is louder than a second equipment 9 for sending various types of tones, is sent during a constant time and a first extension calling is notified.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19678287A JPS6439898A (en) | 1987-08-05 | 1987-08-05 | Private branch exchange equipped with extension calling function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19678287A JPS6439898A (en) | 1987-08-05 | 1987-08-05 | Private branch exchange equipped with extension calling function |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439898A true JPS6439898A (en) | 1989-02-10 |
Family
ID=16363542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19678287A Pending JPS6439898A (en) | 1987-08-05 | 1987-08-05 | Private branch exchange equipped with extension calling function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439898A (en) |
-
1987
- 1987-08-05 JP JP19678287A patent/JPS6439898A/en active Pending
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