JPH02133045U - - Google Patents
Info
- Publication number
- JPH02133045U JPH02133045U JP4046289U JP4046289U JPH02133045U JP H02133045 U JPH02133045 U JP H02133045U JP 4046289 U JP4046289 U JP 4046289U JP 4046289 U JP4046289 U JP 4046289U JP H02133045 U JPH02133045 U JP H02133045U
- Authority
- JP
- Japan
- Prior art keywords
- main device
- telephones
- central office
- switch circuit
- telephone exchange
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046289U JPH02133045U (pl) | 1989-04-07 | 1989-04-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046289U JPH02133045U (pl) | 1989-04-07 | 1989-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02133045U true JPH02133045U (pl) | 1990-11-05 |
Family
ID=31550273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4046289U Pending JPH02133045U (pl) | 1989-04-07 | 1989-04-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02133045U (pl) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108708A (en) * | 1976-03-10 | 1977-09-12 | Nec Corp | Impedance automatic control system at the time of multiplex call |
-
1989
- 1989-04-07 JP JP4046289U patent/JPH02133045U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108708A (en) * | 1976-03-10 | 1977-09-12 | Nec Corp | Impedance automatic control system at the time of multiplex call |