Chapter 2 - Getting Started 7
Thick Ethernet
To connect the router’s Ethernet interface to a standard (thick) Ethernet
cable you will need a transceiver cable connection at the correct loca-
tion on your Ethernet cable. The transceiver cable will attach directly to
the DB-15 connector on the router.
10BaseT Twisted-Pair Ethernet
To connect the router’s Ethernet interface to twisted-pair Ethernet
cabling you will need an unshielded twisted-pair station cable that is
connected to a 10BaseT-compatible twisted-pair hub.
v Note: Ethernet cables and cable connectors are not supplied with the
RISC Router product. Please contact your reseller or your Compatible
Systems representative for information on obtaining the correct
Ethernet cabling supplies.
Telco Line Connection Requirements
The RISC Router 3500R is not a line communications device. In order
to connect to a wide area transmission line, you must use a 56K CSU/
DSU, ISDN Terminal Adapter, or T1/E1 CSU/DSU. Which of these
devices you use depends on the type of telco line to which you are
connecting one of the router’s wide area interfaces.
v Note: Before attempting to connect the RISC Router 3500R to a
leased telco line, use the loopback features of your CSU/DSU to check
the line. This can save you a considerable amount of time, since the
more equipment you have on the line, the more difficult it becomes to
determine where a problem is occurring.
The RISC Router 3500R provides four high-speed V.35 synchronous
interfaces, each of which can be independently configured for PPP,
Frame Relay or SMDS operation. The V.35 interfaces are capable of
communicating to another router or a PPP client machine over a 56K
CSU/DSU, an ISDN Terminal Adapter, or a T1/E1 CSU/DSU.
V.35 Interface
The RISC Router 3500R includes four V.35 cables. These cables termi-
nate in a male V.35 connector, which fits the female V.35 connector
supplied by virtually all V.35 line communications devices. The
pinouts for this cable are shown in Appendix B.