./ |
RS232C-combination |
http://nemesis.lonestar.org/reference/telecom/modems/dtedce.html
Cisco-RJ45-to-DB-25
cisco から入手出来る「アダプタ」の種類
| Apapter
|
|---|
| DTE M/F Pins
| DCE M/F Pins
| MMOD Pins(2)
|
| DB-25 Pins(1) |
Def. | Color |
|---|
| RJ 45 #
| 1 | 4 RTS | 5 | 5 | CTS | Blue
|
|---|
| 2 | 20 DTR | 6 | 8 | DSR | Orange (DCD(8)) | Modem <- PC
|
| 3 | 2 TXD | 3 | 3 | RXD | Black | Modem -> PC
|
| 4 | 7 | 7 | 7 | RXD GND | Red/Green
|
| 5 | 7 | 7 | 7 | TXD GND |
|
| 6 | 3 RXD | 2 | 2 | TXD | Yellow | Modem <- PC
|
| 7 | 6 DSR | 20 | 20 | DTR | Brown | Modem -> PC
|
| 8 | 5 CTS | 4 | 4 | RTS | Grey
|
|
上記で数字は DB-25 のピン番号
|
色付は DCE と MMOD の違う部分を示す
上で出て来る名前のうち、
(1) The female terminal equipment(FDTE) adapter that is available from Cisco
is label "Terminal."
(2) The MMOD adapter that is available from Cisco is labeled "Modem."
ピン番号の実際の配置を上から見る
+-----+ 1
| | 2
+-+ | 3
| | 4
| | 5
+-+ | 6
| | 7
+-----+ 8
top view
Sun serial port (本来のつなぎ方)
2 output -> TXD(modem) 2
3 input <- RXD(modem) 3
Sun serial port (今回のつなぎ方)
RJ45
2 -> 3(RXD)
3 <- 6(TXD)
ということは DTE を使うのが正しい。
DB-25
6 DSR
8 DCD
Last Update
13:36:01 03/15/08
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Apache/2.4.46 (Unix) PHP/7.4.15
(since 2000/01/17)