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4.3 CONNECTING THE TWISTED PAIR INTERFACE
The Model 3088RC supports communication between two DTE devices
as follows:
Using 24 AWG (0.5 mm) wire up to:
• 32,000 feet (9.7 km) at 192 kbps
• 18,500 feet (5.6 km) at 2.312 Mbps
Using 26 AWG (0.4 mm) wire up to:
• 23,000 feet (7 km) at 192 kbps
• 13,200 feet (4 km) at 2.312 Mbps
Two things are essential:
1. These units work in pairs. Both units at the end of the twisted pair
DSL span must be set for the same DTE rate—one unit set as CO,
the other as CP.
2. To function properly, the Model 3088RC needs one twisted pair of
metallic wire. This twisted pair must be unconditioned, dry, metallic
wire, between 19 (0.9mm) and 26 AWG (0.4mm) (the higher number
gauges will limit distance). Standard dial-up telephone circuits, or
leased circuits that run through signal equalization equipment, or
standard, flat modular telephone type cable, are not acceptable.
The interconnecting cables shall be acceptable for
external use and shall be rated for the proper applica-
tion with respect to voltage, current, anticipated tem-
perature, flammability, and mechanical serviceability.
CAUTION