JPS6289855U - - Google Patents
Info
- Publication number
- JPS6289855U JPS6289855U JP1985181561U JP18156185U JPS6289855U JP S6289855 U JPS6289855 U JP S6289855U JP 1985181561 U JP1985181561 U JP 1985181561U JP 18156185 U JP18156185 U JP 18156185U JP S6289855 U JPS6289855 U JP S6289855U
- Authority
- JP
- Japan
- Prior art keywords
- modem
- terminal
- data
- received
- communication unit
- 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
- 230000004044 response Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Description
第１図は本考案に係わるモデム通信制御システ
ムの一実施例を示す系統図、第２図はモデム番号
設定の手順を説明するための説明図、第３図は端
末とモデムとの間で通信を行う場合の手順を説明
するための説明図、第４図は電源が切れたモデム
を端末が判定する場合の手順を説明するための説
明図である。
１……端末、２，３，４……モデム、Ｓ２０，
Ｓ２１，Ｓ３０，Ｓ３１，Ｓ４０，Ｓ４１……ス
イツチ、２０，２１，３０，３１，４０，４１…
…通信部、２２，３２，４２……メモリ、２３，
３３，４３……制御部。
Fig. 1 is a system diagram showing an embodiment of the modem communication control system according to the present invention, Fig. 2 is an explanatory diagram for explaining the modem number setting procedure, and Fig. 3 is a diagram showing the communication between the terminal and the modem. FIG. 4 is an explanatory diagram for explaining the procedure when the terminal determines which modem is powered off. 1... terminal, 2, 3, 4... modem, S20,
S21, S30, S31, S40, S41... Switch, 20, 21, 30, 31, 40, 41...
...Communication section, 22, 32, 42...Memory, 23,
33, 43...Control unit.
Claims (1)
のデータ通信とは別のチヤンネルを使用して接続
され、順に、前記端末と第１のモデム、第１のモ
デムと第２のモデム，…，第Ｎ―１のモデムと第
Ｎのモデムというように接続され、前記第１〜第
Ｎのモデム内に前記端末方向に向かつて通信する
ための第１の通信部と前記端末方向とは逆の方向
に向かつて通信するための第２の通信部とを有す
るモデム通信制御システムにおいて、前記モデム
は、前記端末方向からのデータを直接次のモデム
に接続するための第１のスイツチと、次のモデム
からのデータを直接前記端末方向に接続するため
の第２のスイツチと、前記端末から送信されたモ
デム番号データの番号を記憶するメモリと、制御
部とを備え、前記制御部は、前記端末から送信さ
れたモデム番号データを前記第１の通信部で受信
した場合にその番号が「１」で無ければ受信した
番号から「１」引いた番号に変換したモデム番号
データを前記第２の通信部から送信した後、前記
第１と第２のスイツチを動作させる制御を行い、
前記モデム番号データの番号が「１」であればそ
の番号「１」を受信したモデムと前記端末との間
で通信することができることを示す応答データを
第１の通信部から送信する制御を行い、前記端末
から受信したモデム番号データの番号が先に前記
メモリ部に格納した番号より大きければその番号
を受信したモデムより手前のモデムの電源が切れ
たことを示す応答データを第１の通信部から送信
する制御を行うことを特徴とするモデム通信制御
システム。 N modems (1st to Nth) are connected to one terminal using a channel different from normal data communication, and in order, the terminal and the first modem, the first modem and the second modems, . and a second communication unit for communicating in a direction opposite to that of the terminal, wherein the modem has a first switch for directly connecting data from the direction of the terminal to the next modem. a second switch for directly connecting data from a next modem to the terminal; a memory for storing a number of modem number data transmitted from the terminal; and a control section. When modem number data transmitted from the terminal is received by the first communication unit, if the number is not "1", the modem number data is converted to a number by subtracting "1" from the received number. After transmitting from the second communication unit, controlling the first and second switches to operate;
If the number of the modem number data is "1", control is performed to transmit response data from the first communication unit indicating that communication can be performed between the modem that received the number "1" and the terminal. , if the number of the modem number data received from the terminal is larger than the number previously stored in the memory unit, the first communication unit transmits response data indicating that the power of the modem before the modem that received the number is turned off; A modem communication control system characterized by controlling transmission from a modem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985181561U JPS6289855U (en) | 1985-11-27 | 1985-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985181561U JPS6289855U (en) | 1985-11-27 | 1985-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289855U true JPS6289855U (en) | 1987-06-09 |
Family
ID=31126542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985181561U Pending JPS6289855U (en) | 1985-11-27 | 1985-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289855U (en) |
-
1985
- 1985-11-27 JP JP1985181561U patent/JPS6289855U/ja active Pending
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