JPH03107850U - - Google Patents
Info
- Publication number
- JPH03107850U JPH03107850U JP1511790U JP1511790U JPH03107850U JP H03107850 U JPH03107850 U JP H03107850U JP 1511790 U JP1511790 U JP 1511790U JP 1511790 U JP1511790 U JP 1511790U JP H03107850 U JPH03107850 U JP H03107850U
- Authority
- JP
- Japan
- Prior art keywords
- tone
- ring tone
- exchange
- digital telephone
- generators
- 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 7
Landscapes
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1511790U JPH03107850U (no) | 1990-02-17 | 1990-02-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1511790U JPH03107850U (no) | 1990-02-17 | 1990-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03107850U true JPH03107850U (no) | 1991-11-06 |
Family
ID=31518436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1511790U Pending JPH03107850U (no) | 1990-02-17 | 1990-02-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03107850U (no) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52130219A (en) * | 1976-04-24 | 1977-11-01 | Fujitsu Ltd | Transmission control system for call signal |
JPS6181064A (ja) * | 1984-09-28 | 1986-04-24 | Nec Eng Ltd | 発信者識別方式 |
-
1990
- 1990-02-17 JP JP1511790U patent/JPH03107850U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52130219A (en) * | 1976-04-24 | 1977-11-01 | Fujitsu Ltd | Transmission control system for call signal |
JPS6181064A (ja) * | 1984-09-28 | 1986-04-24 | Nec Eng Ltd | 発信者識別方式 |