2.2.1 LAN Ethernet connection
The LAN interface has two female RJ45 connectors to connect to the Ethernet 10BaseT / 100BaseT networks. Con-
nect them through shielded (STP), or unshielded (UTP) twisted pair cables. Since these cables are not supplied with
the router and must be purchased separately, please contact your supplier.
Depending on the design of the network, the connection is done through a HUB or straight to the Ethernet interface
of another terminal device by means of a crossover cable (please contact your supplier for information on Ethernet
crossover cables).
2.2.2 WAN or external modem connection
DTE/DCE multi-standard serial interfaces have a female DB25 connector to connect to an external modem or to net-
works such as X.25, Frame Relay, etc.
The type of cable required will depend on the type of connection. This cable can be supplied by Teldat.
A flap on the underside of the device provides access to the sockets where the V.24 DTE/DCE, V.35 DTE/DCE, X.21
DTE/DCE and RS-485 2/4 wire drivers can be inserted. The drivers are not multipurpose and have a T and an M
stenciled at either end. Define the mode you want by simply inserting the T end of the driver into the connector (if you
want terminal mode) or the M end (if you want modem). Bear in mind that RS-485 drivers cannot change the behavi-
or from modem to terminal. Setting 2-wire or 4-wire operation is done via the router’s application software, using the
associated interface’s configuration commands. This driver must always be connected to the 2H/4H marking, with
the arrow pointing towards the rear of the device (closest to the external connector).
Note
The default configuration for the drivers is shown on a label at the bottom panel of the device, close to
the flap used to access the drivers.
The configuration of the drivers included in Figure 3 shows WAN 3 operating in DCE mode and WAN 2 in DTE
mode. No driver is inserted in WAN 1 and the connectors are shown for didactic purposes.
Fig. 5: Driver insertion, depending on the operating mode
2.2.3 Connecting: Configuration
The ATLAS 300 routers have a DB-9 female connector on the rear panel labeled AUX. This provides access
to the router’s local console for configuration and monitoring. To use it, connect the AUX port to an asyn-
chronous terminal (or to a PC with terminal emulation).
Fig. 6: Connection for configuration/monitoring via console
Terminal configuration is as follows:
Teldat S.A.
2 Installing the Router
ATLAS 300 Installation Manual
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