Patton electronic 1088/K - Manual (Page 16)

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G.703/G.704 network terminates via dual coaxial cable, use the diagram
below to make the proper connections. The connector pinout and signals
are shown in Figure 7.
Figure 7. 75-ohm Dual Coaxial G.703 Interface
Note The outer conductor of the coax cables are isolated from system
earth ground.
4.3 CONNECT TWISTED-PAIR DSL INTERFACE
The Model 1088/K supports communication between two DTE devices at
distances to 5 miles (8 km) over 24 AWG (.5 mm) twisted pair wire. Two
things are essential:
• These units operate as a pair. Both units at the end of the twisted pair
DSL span must be set for the same DTE rate.
• To function properly, the Model 1088 needs one twisted pair of metal-
lic wire. This twisted pair must be unconditioned, dry, metallic wire,
between 19 (.9mm) and 26 AWG (.4mm) (the higher number gauges
will limit distance). Standard dial-up telephone circuits, or leased cir-
cuits that run through signal equalization equipment, or standard, flat
modu-lar telephone type cable, are not acceptable.
The RJ-48C connector on the Model 1088’s twisted pair interface is
polarity insensitive and is wired for a two-wire interface. The signal/pin
relationships are shown in Figure 8.
Figure 8. Model 1088 twisted pair line interface.
TX
(Data TO
G.703/G.704
Network)
RX
(Data FROM
G.703/G.704
Network)
Network
1 (N/C)
2 (N/C)
3 (N/C)
4 (2-Wire TIP)
5 (2-Wire RING)
6 (N/C)
7 (N/C)
8 (N/C)
1
2
3
4
5
6
7
8