Interfaces of the modem
98-175666-A Chapter 3: Interfaces 3-5
3.1.8 LAN connectors
The BDU has four Ethernet connectors (type RJ-45), located at the back of the unit, for
PC/laptops, routers, wireless access points. LAN port 5 is for service access at the front.
Depending on the VSAT modem, one LAN connector may be used for modem control.
The maximum cable length per connection is 100 m.
Cable type: CAT5, shielded.
3.2 Interfaces of the modem
The following sections describe the connectors of the modem and how to connect to the
BDU, power and other equipment.
3.2.1 Connector panel
The following figure shows the connector panel of the modem.
3.2.2 Rx In and Tx Out connectors
The modem has an Rx In and a Tx Out connector. Use these connectors to connect the
BDU to the modem.
Outline Pin Pin function Wire color
1 Tx+ White/orange
2Tx- Orange
3 Rx+ White/green
4 Not connected Blue
5 Not connected White/blue
6Rx- Green
7 Not connected White/brown
8 Not connected Brown
Table 3-8: Ethernet connector, outline and pin assignment
Figure 3-3: Connector panel of the modem
Control via BDU Tx Out Rx InGround
Tx Mute &
Rx Lock
RS-422RS-232 AC Power
GMU
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