Terminal And Modem Cables - Allied Telesis AR Series Hardware Reference Manual

Hardware Reference
Table 32: Terminal and modem cables.
Cable
RJ-45 (router) to DB25 female (terminal) cable
DB9 female (router/DTE) to DB9 female (PC/terminal/DTE) cable
DB9 male (router/DCE) to DB9 female (PC/terminal/DTE) cable
DB9 female (router/DTE) to DB9 male (modem/DCE) cable
DB9 male (router/DCE) to DB9 male (modem/DCE) cable
RJ-45 (router) to DB25 male (modem) cable
R-J45 (router) to MiniDin (Macintosh)
C613-03031-01 REV C

Terminal and Modem Cables

Table 32 on page 73 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 39: Pin wiring diagram for a standard RJ-45 terminal cable.
RJ45
(to switch or router)
←
(RXD) 5
→
(TXD) 6
←
(CTS) 7
→
(RTS) 8
→
(GND) 4
←
(DTR) 3
←
(DCD) 2
(RING) 1
Notes:
→ Output from switch or router; ← Input to switch or router.
(1)
(2) Cable version 1.0.
Figure
Figure 39 on page 73
Figure 40 on page 74
Figure 41 on page 74
Figure 42 on page 75
Figure 43 on page 76
Figure 44 on page 76
Figure 45 on page 77
DB25
Female
1 Not connected
2
3
4
5
6
Not connected
7
8
20
22
73
TERMINAL