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TDM Port 37
Model 3086FR ATM IAD User Guide 4 • Connecting the DSL and data ports
To function properly, the Model 3086FR needs one twisted pair of metallic 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 circuits that run through signal equalization
equipment, or standard, flat modular telephone type cable, are not acceptable. The female RJ-11 connector on
the Model 3086FR’s twisted pair interface is polarity insensitive and is wired for a two-wire interface.
Figure 7. RJ-11 pinout
TDM Port
Model 3086FR units enable V.35, X.21, or T1/E1 interface connection to local routers, multiplexers, and other
Frame Relay devices. The V.35 interface is presented either on a M/34, or DB-25 female connectors. The X.21
interface is presented on a female DB-15 connector, while the T1/E1 interface is presented on an RJ-48C jack,
additionally the E1 interface is presented on dual BNC.
Figure 8 on page 38 shows the different connectors
offered for the serial port.