14
Ethernet to G.703 Bridge
Installation
Once the Ethernet to G.703 Bridge is properly configured, it is ready to connect
to the G.703/G.704 interface, to the Ethernet port, and to the power source. This
section describes how to make these connections.
Connecting to the G.703 Network
The Power, G.703/G.704 and Ethernet Line connections are located on the rear
panel of the Ethernet to G.703 Bridge . Figure 5, below, shows the location of each
of these ports.
Connecting Dual Coaxial Cable (75 ohm) to the G.703 Network
The Ethernet to G.703 Bridge is equipped with dual female BNCs (TX and RX)
for connection to a 75 ohm dual coax G.703 network interface. If your G.703/G.704
network terminates via dual coaxial cable, use the diagram below to make the proper
connections. See Figure 6 below.
NOTE: The outer conductor of the coax cables are isolated from system earth
ground.
When using the 75 Ohm interface, jumper straps JP3, JP6, JP7, and JP8 must be
installed over the jumpers. The jumpers are located next to the BNC connectors.
Refer to the following section to open the case. Open the case and install jumper
straps for JP3, JP6, JP7, and JP8.
Figure 5.
Ethernet to G.703 Bridge Rear Panel
75 Ohm 120 Ohm
TX
RX
TX
RX
Data
TO
Network
Data
FROM
Network
Figure 6:
Rear Panel, Showing Location of Connectors.
13
Ethernet to G.703 Bridge
SW2-5
Option
Off
Front Panel Switches Enabled
On
Front Panel Switches Disabled
SWITCH SW2-6: V.54 Response Enabled (DEFAULT)
V.54 is a special in-band loopback facility that sends a pseudo-random pattern over
the data stream. This is the only loopback that the unit can initiate. This is useful for
campus applications when you need to put a remote unit in loopback. The unit
responds to the V.54 loopback command, and the whole process takes only a few
seconds to complete. When V.54 Loopback is disabled, the unit will not be able to
respond to V.54 loopback commands.
SW2-6
Option
Off
V.54 Response Enabled
On
V.54 Response Disabled
