JPS5525261A - Digital transmission system for aural signal - Google Patents
Digital transmission system for aural signalInfo
- Publication number
- JPS5525261A JPS5525261A JP9822378A JP9822378A JPS5525261A JP S5525261 A JPS5525261 A JP S5525261A JP 9822378 A JP9822378 A JP 9822378A JP 9822378 A JP9822378 A JP 9822378A JP S5525261 A JPS5525261 A JP S5525261A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transmission system
- aural signal
- public
- calling
- 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
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
PURPOSE:To secure an easy connection of the calling within the packet transmission system to the public circuit by delivering the calling within the packet transmission system through the code conversion circuit when the connection to the public circuit is required and through the packet formation circuit when no request is given respectively. CONSTITUTION:Dial signal decision circuit 5 decides whether the dial signal transmitted from the telephone prior to the aural signal requests the connection to the public circuit. And in case the request exists, the aural signal received A/D conversion 7 is delivered 4 from code conversion circuit 9 via the selection circuit. While in case no request is given, the A/D-converted 7 aural signal is delivered 4 from the selection circuit via packet formation circuit 8. In this way, the calling sent from within the packet transmission system can be connected to the public circuit in a simple way.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9822378A JPS5525261A (en) | 1978-08-14 | 1978-08-14 | Digital transmission system for aural signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9822378A JPS5525261A (en) | 1978-08-14 | 1978-08-14 | Digital transmission system for aural signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525261A true JPS5525261A (en) | 1980-02-22 |
Family
ID=14213954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9822378A Pending JPS5525261A (en) | 1978-08-14 | 1978-08-14 | Digital transmission system for aural signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525261A (en) |
-
1978
- 1978-08-14 JP JP9822378A patent/JPS5525261A/en active Pending
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