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: http://www.apo.nmsu.edu/Telescopes/RJ11_Serial/Cables/OctopusForXyplex.html
Дата изменения: Fri Dec 1 04:22:19 2000 Дата индексирования: Sun Apr 10 03:39:39 2016 Кодировка: Поисковые слова: annular solar eclipse |
Each octopus cable connects 8 xyplex MX1620 terminal server ports to to a patch panel or 8-port harmonica with 6-wire 6-position RJ11 jacks. The patch panel or harmonica must be USOC-wired and have a male Telco connector, since this cable has a female Telco connector. This same wiring presumably works for all other xyplex terminal servers with RJ45 jacks.
If you wish to use hardware flow control then configure the xyplex for CTS/RTS handshaking.
Each octopus consists of:
Each leg is four feet (4') long unless otherwise specified. The wiring is as follows. Use of twisted pair wire is optional, but if it is used, it must be used as shown in the table.
|
RJ45 |
Female Telco Connector Pin |
||||||||
|
Leg #1 |
Leg #2 |
Leg #3 |
Leg #4 |
Leg #5 |
Leg #6 |
Leg #7 |
Leg #8 |
||
|
twisted |
3 |
27 |
30 |
33 |
36 |
39 |
42 |
45 |
48 |
|
4 |
1 |
4 |
7 |
10 |
13 |
16 |
19 |
22 |
|
|
twisted |
5 |
26 |
29 |
32 |
35 |
38 |
41 |
44 |
47 |
|
6 |
2 |
5 |
8 |
11 |
14 |
17 |
20 |
23 |
|
|
twisted |
8 |
28 |
31 |
34 |
37 |
40 |
43 |
46 |
49 |
|
1 |
3 |
6 |
9 |
12 |
15 |
18 |
21 |
24 |
|
RJ-45 pins 2 and 7 must not be connected to anything. Telco pins 25 and 50 are also not connected.
The octopus wiring is derived from the table below, as follows:
|
RJ45 |
RJ11 |
Signal |
Telco Connector Pin |
|||
|
Leg #1 |
Leg #2 |
Leg #3 |
||||
|
twisted |
3 |
2 |
Tx |
27 |
30 |
... |
|
4 |
3 |
Tx Gnd |
1 |
4 |
... |
|
|
twisted |
5 |
4 |
Rx Gnd |
26 |
29 |
... |
|
6 |
5 |
Rx |
2 |
5 |
... |
|
|
twisted |
8 |
1 |
Tx Flow |
28 |
31 |
... |
|
1 |
6 |
Rx Flow |
3 |
6 |
... |
|