CH AP TE R 2 - INS T ALL ATIO N
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2.3.4.3
Connecting the WAN Cable
The single WAN connection on the DX940 can be a DDS or a T1/E1 port. An RJ48 is used for both the
DDS and the T1/E1 ports. This is a modular connector that connects the DX940 to the external
telecommunications network. The following procedure assumes that the line and telecom equipment are
ready to accept data traffic from the DX940 and the interfacing cable is already attached to this gear.
Connect the RJ48-terminated cable to the WAN port as follows:
1. Install the RJ48 connector into the port with the clip facing down.
2. Push the RJ48 connector into the slot until you hear a click.
3. Give the cable a gentle tug to ensure that the connector clip is firmly seated.
4. Verify that the connection has been made by checking the LED associated with this port
on the top of the DX940 chassis. It should be illuminated. If the link LED is not
illuminated verify that the equipment on the other end of the cable is powered up and
properly connected.
2.4 Maintenance
The DX940 is designed to be replaced as a unit. There are no servicing requirements and there are no user-
repairable components in this device. Maintenance is limited to replacing the unit.
The following sections detail disconnecting all connections to the chassis, removing the chassis, cleaning
optical devices and packing the DX940 for return to the manufacturer. If it is still possible to connect a
terminal to the malfunctioning DX940 and retrieve any configuration data from the device, do so prior to
removing power.
2.4.1 Removing the DX940
Removing the DX940 entails disconnecting the network cabling, disconnecting the power and ground
lines, and removing the chassis from the rack or other installation location. The unit can then be
packed for shipment to the manufacturer.
2.4.1.1
Disconnecting Network Cables
The sequence for removal of the serial and Ethernet cables is not important, but it is important to note
that there are active devices connected to each end of the cable.
1. Remove all of the Async DB9 connectors from the serial ports by unscrewing the two
captive screws on each cable and pulling the connector off the port. (Label the
connector with the port number if the cable is to be reconnected at some later time.)
2. Remove the Ethernet RJ45 connectors from the Ethernet ports by pressing on the clip
on the underside of the modular connector and pulling the connector straight out.
(Label the connector with the port number if the cable is to be reconnected at some
later time.) Repeat for the RJ48 WAN connector.
2.4.1.2
Disconnecting Power and Ground Lines
ELECTRICAL WARNING: Before disconnecting either AC or DC power
