JPS56169466A - Converting system for interface function - Google Patents
Converting system for interface functionInfo
- Publication number
- JPS56169466A JPS56169466A JP7287780A JP7287780A JPS56169466A JP S56169466 A JPS56169466 A JP S56169466A JP 7287780 A JP7287780 A JP 7287780A JP 7287780 A JP7287780 A JP 7287780A JP S56169466 A JPS56169466 A JP S56169466A
- Authority
- JP
- Japan
- Prior art keywords
- codic
- interface
- switching mechanism
- telephone set
- boards
- 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
- 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)
- Interface Circuits In Exchanges (AREA)
Abstract
PURPOSE:To decrease the types of interface boards, by converting the function of an interface circuit in an exchanger having 2-4 wire converting function with a switching mechanism which changes over two incoming and outgoing wires into exclusive two incoming and outgoing wires. CONSTITUTION:Printed boards 51A, 51B- having a plurality of interface functions are provided for a 2-4 wire conversion type exchanger 5, and the board 51A performs digital conversion for the electric signal of an audio source 3 via a codic 514 at a switching mechanism 517 and transmits it from an output terminal 518C to a channel replacing device 53. On the other hand, a digital signal inputted 518F is in analog conversion at a codic 514 for loud speaking 4. The board 51B transmits 518C the audio signal of a telephone set 2A at a switching mechanism 517 via a filter 516 and the codic 514, and the audio signal of other telephone set inputted 518F is supplied to the telephone set 2A via the codic 514 and a filter 515. Thus, one of the transmission and reception circuit can independently use one codic, allowing to decrease the types of boards for interface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7287780A JPS56169466A (en) | 1980-05-30 | 1980-05-30 | Converting system for interface function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7287780A JPS56169466A (en) | 1980-05-30 | 1980-05-30 | Converting system for interface function |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56169466A true JPS56169466A (en) | 1981-12-26 |
JPH0121660B2 JPH0121660B2 (en) | 1989-04-21 |
Family
ID=13501997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7287780A Granted JPS56169466A (en) | 1980-05-30 | 1980-05-30 | Converting system for interface function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56169466A (en) |
-
1980
- 1980-05-30 JP JP7287780A patent/JPS56169466A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0121660B2 (en) | 1989-04-21 |
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