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 com-
plete. 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
11
12
55..00 IIN
NSSTTA
ALLLLA
ATTIIO
ON
N
Once the Model 2701/I is properly configured, it is ready to con-
nect to the G.703/G.704 interface, to the Ethernet port, and to the
power source. This section describes how to make these connections.
5.1 CONNECTING TO THE G.703 NETWORK
The Power, G.703/G.704 and Ethernet Line connections are
located on the rear panel of the Model 2701/I. Figure 5, below, shows
the location of each of these ports.
5.1.1 Connecting Dual Coaxial Cable (75 ohm) to the G.703 Network
The Model 2701/I 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 dia-
gram 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 JP2, JP5, JP6,
and JP7 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 JP2, JP5, JP6, and
JP7.
TX
RX
Data TO
Network
Data
FROM
Network
Figure 6: Rear Panel, Showing Location of Connectors.
75 Ohm
120 Ohm
TX
RX
Ethernet
Figure 5. Model 2701/I Rear Panel
