Patton electronic 2073 - Manual (Page 6)

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Switch S2-2: G.703 Bi-Polar Violation (BPV) Transmit Control
Use switch S2-2 to determine whether or not the Model 2073 will
insert BPV’s into the transmitted G.703 data stream.
Switch S2-3: Front Panel Switch Enable/Disable
Use Switch S2-3 to disable or enable the front panel switches.
Switch S2-4: DTE Test Mode Request Enable/Disable
Use Switch S2-4 to determine whether or not the Model 2073 will
respond to test mode requests (LAL or RDL) from the DTE.
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4 4..0 0 IIN NS ST TA AL LL LA AT TIIO ON N
The Model 2073 is designed for 4-wire, full duplex communication
over a co-directional 64 kbps G.703 clear channel network dedicated
twisted pair. This section describes the proper connection of the line
interface, the DTE (terminal) interface, and AC/DC power.
4.1 Connecting to a PCM Network Channel
The RJ-45 port on a model 2073 is pre-wired for direct connetion to
the G.703 PCM network. Connect the RJ-45 port of the Model 2073 to
the RJ-45 jack provided by your digital service carrier using a straight
through twisted pair cable between 19 and 26 AWG. The signal pin
relationships are shown in Figure 4 below.
Figure 4. 64K G.703 Interface
4.2 Connection Over Private Twisted Pair
If you wish to connect the Model 2073 to another Model 2073 (or
compatible G.703 device) over private twisted pair, make the connec-
tion between the two devices using a crossover cable pinned accord-
ing to the diagram below.
RJ-45 Cable (8-Wire)
SIGNAL PIN# PIN# SIGNAL
RX+ 1----------5 TX+
RX- 2----------4 TX-
TX+ 5----------1 RX+
TX- 4----------2 RX-
Shield 3----------3 Shield
Shield 6----------6 Shield
1 (RX+)
2 (RX-)
3 (N/C)
4 (TX-)
5 (TX+)
6 (N/C)
7 (N/C)
8 (N/C)
1
2
3
4
5
6
7
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Front Panel Switch Operation S2-3
Disabled Off
Enabled On
DTE Test Mode Requests S2-4
Ignored Off
Acknowledged On
BPV Transmit Behaviour S2-2
BPVs not inserted into G.703 data stream Off
BPVs insterted into G.703 data stream On
NOTICE! The G.703 line surge protection on this unit was
installed for circuit protection only. By no means does this
include the preservation of signal quality during a large
surge.