JPS52140208A - Urgent call service system - Google Patents
Urgent call service systemInfo
- Publication number
- JPS52140208A JPS52140208A JP5649376A JP5649376A JPS52140208A JP S52140208 A JPS52140208 A JP S52140208A JP 5649376 A JP5649376 A JP 5649376A JP 5649376 A JP5649376 A JP 5649376A JP S52140208 A JPS52140208 A JP S52140208A
- Authority
- JP
- Japan
- Prior art keywords
- special
- trunk
- call service
- special trunk
- urgent call
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
Abstract
PURPOSE:To special number for the urgent call service is sent to ranslator TLR instead of the called subscriber number, and the route information of the special trunk is produced to secure a connection between calling subscriber SUB(A) and special trunk STRK. After this, the special trunk receives and memorizes the called subscriber number information. At the same time, the transmission from general subcribers becomes possible even at the control time by performing the succeeding controls, etc. by multi-frequency sender. For the toll transmission exchange, the call becomes possible if the idle circuit is provided inj order to store the class of special trunk to the preference class.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5649376A JPS52140208A (en) | 1976-05-19 | 1976-05-19 | Urgent call service system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5649376A JPS52140208A (en) | 1976-05-19 | 1976-05-19 | Urgent call service system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52140208A true JPS52140208A (en) | 1977-11-22 |
Family
ID=13028609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5649376A Pending JPS52140208A (en) | 1976-05-19 | 1976-05-19 | Urgent call service system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52140208A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54127206A (en) * | 1978-03-27 | 1979-10-03 | Nec Corp | Emergency processing system |
EP0700222A2 (en) | 1994-08-31 | 1996-03-06 | Nippon Telegraph And Telephone Corporation | Call selecting apparatus |
-
1976
- 1976-05-19 JP JP5649376A patent/JPS52140208A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54127206A (en) * | 1978-03-27 | 1979-10-03 | Nec Corp | Emergency processing system |
JPS6130459B2 (en) * | 1978-03-27 | 1986-07-14 | Nippon Electric Co | |
EP0700222A2 (en) | 1994-08-31 | 1996-03-06 | Nippon Telegraph And Telephone Corporation | Call selecting apparatus |
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