JPS52137909A - Connection system for common control type automatic interior switchboard - Google Patents
Connection system for common control type automatic interior switchboardInfo
- Publication number
- JPS52137909A JPS52137909A JP5489876A JP5489876A JPS52137909A JP S52137909 A JPS52137909 A JP S52137909A JP 5489876 A JP5489876 A JP 5489876A JP 5489876 A JP5489876 A JP 5489876A JP S52137909 A JPS52137909 A JP S52137909A
- Authority
- JP
- Japan
- Prior art keywords
- common control
- connection system
- control type
- type automatic
- automatic interior
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/48—Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To make it possible to accurately discriminate the outside line number, and to transmit the call-back information, by installing the function button to the outside line receiving telephone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5489876A JPS52137909A (en) | 1976-05-14 | 1976-05-14 | Connection system for common control type automatic interior switchboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5489876A JPS52137909A (en) | 1976-05-14 | 1976-05-14 | Connection system for common control type automatic interior switchboard |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52137909A true JPS52137909A (en) | 1977-11-17 |
JPS5654117B2 JPS5654117B2 (en) | 1981-12-23 |
Family
ID=12983410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5489876A Granted JPS52137909A (en) | 1976-05-14 | 1976-05-14 | Connection system for common control type automatic interior switchboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52137909A (en) |
-
1976
- 1976-05-14 JP JP5489876A patent/JPS52137909A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5654117B2 (en) | 1981-12-23 |
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