JPH01175043U - - Google Patents
Info
- Publication number
- JPH01175043U JPH01175043U JP7188688U JP7188688U JPH01175043U JP H01175043 U JPH01175043 U JP H01175043U JP 7188688 U JP7188688 U JP 7188688U JP 7188688 U JP7188688 U JP 7188688U JP H01175043 U JPH01175043 U JP H01175043U
- Authority
- JP
- Japan
- Prior art keywords
- dial
- generation circuit
- output
- line
- sends
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例を示す機能ブロツク
図である。
１……押ボタンダイヤルスイツチ、２……ダイ
ヤルパルス発生回路、３……多周波信号発生回路
、４……検出回路、５……制御部、６……ダイヤ
ル選択スイツチ。
FIG. 1 is a functional block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Push button dial switch, 2...Dial pulse generation circuit, 3...Multi-frequency signal generation circuit, 4...Detection circuit, 5...Control unit, 6...Dial selection switch.
Claims (1)
力をダイヤルパルス信号に変換して送出するダイ
ヤルパルス発生回路及び多周波信号に変換して送
出する多周波信号発生回路と、前記ダイヤル入力
時に前記ダイヤルパルス発生回路の出力又は前記
多周波信号発生回路の出力を選択するダイヤル選
択スイツチと、回線からのリングバツクトーン及
び前記回線の極性転換を検出して検出信号を送出
する検出回路と、前記検出信号を受信すると前記
ダイヤルパルス発生回路からの出力が前記回線へ
送出するように選択されている場合に自動的に前
記多周波信号発生回路の出力を前記回線に送出で
きるように前記ダイヤル選択スイツチを制御する
制御部とを有すことを特徴とする電話機。 A dial pulse generation circuit that converts a dial input from a push button dial switch into a dial pulse signal and sends it out, a multifrequency signal generation circuit that converts it into a multifrequency signal and sends it out, and an output of the dial pulse generation circuit when the dial is input. or a dial selection switch that selects the output of the multifrequency signal generation circuit; a detection circuit that detects a ringback tone from the line and a polarity change of the line and sends out a detection signal; a control unit that controls the dial selection switch so that the output of the multifrequency signal generation circuit is automatically sent to the line when the output from the pulse generation circuit is selected to be sent to the line; A telephone characterized by having:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7188688U JPH01175043U (en) | 1988-05-30 | 1988-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7188688U JPH01175043U (en) | 1988-05-30 | 1988-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01175043U true JPH01175043U (en) | 1989-12-13 |
Family
ID=31297073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7188688U Pending JPH01175043U (en) | 1988-05-30 | 1988-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175043U (en) |
-
1988
- 1988-05-30 JP JP7188688U patent/JPH01175043U/ja active Pending