JPS56149892A - Line concentration system of subscriber switchboard - Google Patents
Line concentration system of subscriber switchboardInfo
- Publication number
- JPS56149892A JPS56149892A JP5388380A JP5388380A JPS56149892A JP S56149892 A JPS56149892 A JP S56149892A JP 5388380 A JP5388380 A JP 5388380A JP 5388380 A JP5388380 A JP 5388380A JP S56149892 A JPS56149892 A JP S56149892A
- Authority
- JP
- Japan
- Prior art keywords
- line concentration
- circuit
- conversion
- subscriber
- slc
- 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)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To form a line concentration equipment by constituting a line concentration module which is provided with functions of a subscriber's circuit, a line concentration switch, a subscriber's circuit control part and a line concentration switch control part. CONSTITUTION:A telephone terminal and a subscriber's circuit package SLC are connected by two lines, and are connected to the variable channel codic circuit PCCD after they have been converted to four lines by the BORSCHT circuit BOR. The PCCD executes the operation for converting an analog sound signal to a digital sound code having an optional time slot, and vice versa, in accordance with the timing of AD conversion and DA conversion, which has been provided from the line concentration control part SLCC, and has both functions of AD conversion and time division switching. A digital code after AD conversion passes through the highway selecting circuit HSL, and after that, it is sent out to one of HW1-HW . The AD conversion output in one subscriber's circuit package is brought to OR in the SLC. The highway which has been sent out from the SLC in one line concentration module SCU is brought to OR in the SLCC.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5388380A JPS56149892A (en) | 1980-04-23 | 1980-04-23 | Line concentration system of subscriber switchboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5388380A JPS56149892A (en) | 1980-04-23 | 1980-04-23 | Line concentration system of subscriber switchboard |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56149892A true JPS56149892A (en) | 1981-11-19 |
Family
ID=12955130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5388380A Pending JPS56149892A (en) | 1980-04-23 | 1980-04-23 | Line concentration system of subscriber switchboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56149892A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5991791A (en) * | 1982-11-17 | 1984-05-26 | Fujitsu Ltd | Subscriber line concentrator |
-
1980
- 1980-04-23 JP JP5388380A patent/JPS56149892A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5991791A (en) * | 1982-11-17 | 1984-05-26 | Fujitsu Ltd | Subscriber line concentrator |
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