JPH0131745B2 - - Google Patents
Info
- Publication number
- JPH0131745B2 JPH0131745B2 JP57006801A JP680182A JPH0131745B2 JP H0131745 B2 JPH0131745 B2 JP H0131745B2 JP 57006801 A JP57006801 A JP 57006801A JP 680182 A JP680182 A JP 680182A JP H0131745 B2 JPH0131745 B2 JP H0131745B2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- loudspeaker
- state
- handset
- hook
- 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.)
- Expired
Links
- 230000007704 transition Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP680182A JPS58124358A (ja) | 1982-01-21 | 1982-01-21 | 拡声受話状態切替方式 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP680182A JPS58124358A (ja) | 1982-01-21 | 1982-01-21 | 拡声受話状態切替方式 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58124358A JPS58124358A (ja) | 1983-07-23 |
JPH0131745B2 true JPH0131745B2 (sl) | 1989-06-27 |
Family
ID=11648283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP680182A Granted JPS58124358A (ja) | 1982-01-21 | 1982-01-21 | 拡声受話状態切替方式 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58124358A (sl) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6077557A (ja) * | 1983-10-05 | 1985-05-02 | Taiko Denki Seisakusho:Kk | オンフツクダイヤル機能を有する電話機回路 |
JPS60172865A (ja) * | 1984-02-17 | 1985-09-06 | Meisei Electric Co Ltd | 電話機回路方式 |
JPS60227551A (ja) * | 1984-04-26 | 1985-11-12 | Tamura Electric Works Ltd | 電話端末装置 |
JPS60184357U (ja) * | 1984-05-16 | 1985-12-06 | 八重洲無線株式会社 | 高声呼出スピ−カ回路 |
JPS60184363U (ja) * | 1984-05-18 | 1985-12-06 | 株式会社田村電機製作所 | 機能電話機 |
JPS61284149A (ja) * | 1985-06-10 | 1986-12-15 | Panafacom Ltd | 電話機のスピ−カ受話制御方式 |
JPH0789635B2 (ja) * | 1986-04-15 | 1995-09-27 | キヤノン株式会社 | 電話機 |
DE3703682A1 (de) * | 1987-02-06 | 1988-08-18 | Nixdorf Computer Ag | Teilnehmerstationsschaltung fuer fernmelde-, insbesondere fernsprechanlagen |
JPH01149651A (ja) * | 1987-12-07 | 1989-06-12 | Fujitsu Denso Ltd | ハンズフリー電話端末装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5012910A (sl) * | 1973-04-05 | 1975-02-10 | ||
JPS56112166A (en) * | 1980-02-12 | 1981-09-04 | Toshiba Corp | Receiving voice amplifying system for telephone set |
-
1982
- 1982-01-21 JP JP680182A patent/JPS58124358A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5012910A (sl) * | 1973-04-05 | 1975-02-10 | ||
JPS56112166A (en) * | 1980-02-12 | 1981-09-04 | Toshiba Corp | Receiving voice amplifying system for telephone set |
Also Published As
Publication number | Publication date |
---|---|
JPS58124358A (ja) | 1983-07-23 |
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