Filter
Top Products
Hardware Reference 51
C613-03087-00 Rev E
is ‘powered-on’. This prevents print jobs from being sent to a disconnected
printer and lost. See the Printer Server chapter of the Software Reference.
Cables and Loopback Plugs
This section describes how to make cables for connecting the AR router to
networks, terminals, and printers. It also describes loopback plugs, which are
required for testing most router interfaces.
RS-232 Terminal and Modem Cables
The following tables list the wiring diagrams to follow when constructing
terminal and modem cables for various connector and port combinations for
asynchronous ports.
■ For AR725, AR745 and AT-AR024 asynchronous ports see Table 10.
■ For AR750S, AR750S-DP and AR770S asynchronous ports see Table 11.
RING input 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 RJ-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 DB9 and 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 DB9 or DB25 shell.
Table 10: Terminal and modem cables for AR725, AR745 and AT-AR024
Cable Figure
Asyn port on router/PIC to DB25 female (terminal) cable (DTE to DTE) Figure 21 on page 52
Asyn port on router/PIC to DB9 female (terminal) cable (DTE to DTE) Figure 23 on page 53
Asyn port on router/PIC to DB25 male (modem) cable (DTE to DCE) Figure 25 on page 54
Asyn port on router/PIC to DB9 male (modem) cable (DTE to DCE) Figure 27 on page 55
Asyn port on router/PIC to MiniDin (Macintosh) (DTE to DTE) Figure 29 on page 56
Table 11: Terminal and modem cables for AR750S, AR750S-DP, and AR770S
Cable Figure
Asyn port on router to DB25 female (terminal) cable (DTE to DTE) Figure 22 on page 52
Asyn port on router to DB9 female (terminal) cable (DTE to DTE) Figure 24 on page 53
Asyn port on router to DB25 male (modem) cable (DTE to DCE) Figure 26 on page 54
Asyn port on router to DB9 male (modem) cable (DTE to DCE) Figure 28 on page 55
Asyn port on router to MiniDin (Macintosh) (DTE to DTE) Figure 30 on page 56