JPH01146658U - - Google Patents
Info
- Publication number
- JPH01146658U JPH01146658U JP4032588U JP4032588U JPH01146658U JP H01146658 U JPH01146658 U JP H01146658U JP 4032588 U JP4032588 U JP 4032588U JP 4032588 U JP4032588 U JP 4032588U JP H01146658 U JPH01146658 U JP H01146658U
- Authority
- JP
- Japan
- Prior art keywords
- channel
- modem
- signal transmitting
- receiving section
- switch
- 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
- 230000008054 signal transmission Effects 0.000 description 1
Description
第1図は本考案による変復調装置の一実施例を
示すブロツク図、第2図は従来の変復調装置の一
例を示すブロツク図である。
1……変復調装置、2……変復調部、3……網
制御部、4……セカンドチヤンネル信号送受信部
、5……スイツチ、6……制御部、7……外付電
話機、8……スイツチ。
FIG. 1 is a block diagram showing an embodiment of a modulation/demodulation device according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional modulation/demodulation device. DESCRIPTION OF SYMBOLS 1...Modulation/demodulation device, 2...Modulation/demodulation unit, 3...Network control unit, 4...Second channel signal transmission/reception unit, 5...Switch, 6...Control unit, 7...External telephone, 8...Switch .
Claims (1)
よび自動着信を行う網制御部を有し、交換回線を
介して2線半2重通信を行う変復調装置において
、セカンドチヤンネル信号を送受信するセカンド
チヤンネル信号送受信部と、スイツチと、このス
イツチの操作にしたがつて前記セカンドチヤネル
信号送受信部を制御および該セカンドチヤネル信
号送受信部からの出力信号にしたがつて前記網制
御部を制御する制御部を含むことを特徴とする変
復調装置。 A second channel for transmitting and receiving second channel signals in a modem and demodulator that has a modem and a network control unit that performs manual incoming and outgoing calls and automatic incoming calls using an external telephone, and that performs two-wire half-duplex communication via a switched line. It includes a signal transmitting/receiving section, a switch, and a control section that controls the second channel signal transmitting/receiving section according to the operation of the switch and controlling the network control section according to the output signal from the second channel signal transmitting/receiving section. A modem device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4032588U JPH01146658U (en) | 1988-03-29 | 1988-03-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4032588U JPH01146658U (en) | 1988-03-29 | 1988-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01146658U true JPH01146658U (en) | 1989-10-09 |
Family
ID=31266796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4032588U Pending JPH01146658U (en) | 1988-03-29 | 1988-03-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01146658U (en) |
-
1988
- 1988-03-29 JP JP4032588U patent/JPH01146658U/ja active Pending
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