Allied Telesis AR Router Series, Справочник по аппаратуре

Страница: 83 / 111

Hardware Reference 83
C613-03031-01 REV E
Terminal and Modem Cables
Table 35 on page 83 lists the wiring diagrams to follow when constructing
terminal and modem cables for various connector and port combinations.
The RING input is only available on asynchronous ports on expansion cards. It is not
available on asynchronous ports on base CPU boards.
An alternative method, for both terminal and modem cables, is to wire an R-45
patch cord (a straight pin-to-pin cable with RJ-45 connectors on both ends) and
then use an RJ-45-to-DB25 adaptor wired internally as a crossed cable. These
adaptors are available in both DB25 female and male versions from data
cabling suppliers, and are supplied with wires terminated on the RJ-45 socket
and pins on the free ends. The pins are inserted into the appropriate positions
in the DB25 shell.
Figure 43: Pin wiring diagram for a standard RJ-45 terminal cable.
Table 35: Terminal and modem cables.
Cable Figure
RJ-45 (router) to DB25 female (terminal) cable Figure 43 on page 83
DB9 female (router/DTE) to DB9 female (PC/terminal/DTE) cable Figure 44 on page 84
DB9 male (router/DCE) to DB9 female (PC/terminal/DTE) cable Figure 45 on page 85
DB9 female (router/DTE) to DB9 male (modem/DCE) cable Figure 46 on page 86
DB9 male (router/DCE) to DB9 male (modem/DCE) cable Figure 47 on page 87
RJ-45 (router) to DB25 male (modem) cable Figure 48 on page 87
R-J45 (router) to MiniDin (Macintosh) Figure 49 on page 88
RJ45
(to switch or router)
DB25
Female
1
2
3
4
5
6
7
8
20
22
5
6
7
8
4
3
2
1
←
→
←
→
→
←
←
(RXD)
(TXD)
(CTS)
(RTS)
(GND)
(DTR)
(DCD)
(RING)
Not connected
Not connected
Notes:
(1)
→
Output from switch or router;
←
Input to switch or router.
(2) Cable version 1.0.
TERMINAL