E1/T1 G.SHDSL Two-Wire Extender/NTU

Provides data rates up to 4.6 Mbps over 2-wire, voice-grade wiring.

Selectable 64-kbps rates enable you to choose the bandwidth you need.

Supports distances up to 9.9 miles at lower speeds over 19 AWG wiring.

Probes voice-grade wiring to determine the optimum data rate supported.

Supports G.994.2 handshaking, enabling it to adapt the rate automatically to the existing line conditions.

Features an RS-232 port for managing via a console connection.

Simple to set up and, once configured, operates transparently.

Transformer-coupled two-wire interface boasts 2500-VRMS isolation.

Works with other extender/NTUs to provide interface conversion along with network termination and extension.

Save in cabling costs! A BLACK BOX® E1/T1 G.SHDSL Two-Wire Extender/NTU works as a symmetrical high data rate DSL (G.SHDSL) modem and enables you to use just two wires to extend T1 or E1 communications at higher speeds in a point-to-point application.

Featuring symmetric high-speed digital subscriber line technology, the G.991.2 standard device delivers rate-adaptive nx64 speeds as high as 4.6 Mbps.

The extender/NTU works in a pair communicating across dry, two-wire copper cable of any gauge from 19 AWG (0.9 mm) to 26 AWG (0.4 mm). You may even be able to use the telephone wiring already connecting offices or buildings in your application.

Using the DIP switch on the extender/NTU or an RS-232 console connection, you can set its rate in 64-kbps increments to provide a precise amount of bandwidth to users and to get either greater speed or greater distance. The extender/NTU uses Trellis Coded Pulse Amplitude Modulation (TCPAM) to enhance its performance and support distances twice as far as conventional TDM technologies—up to 9.9 miles (16 km) when using 19 AWG wiring and operating at 192-kbps speeds.

The G.SHDSL Two-Wire Extender/NTU also includes a probe to determine the optimum data rate supported by the link between local and remote units. In addition, an error monitor inspects the line for intervals that exceed its user-set error threshold and, if necessary, restarts the link automatically.

For easy troubleshooting, the extender/NTU features front-panel LEDs and other diagnostic tools for detecting errors on the two-wire connection. The E1/T1 extender/NTU also features a PRBS pattern generator and detector, and supports basic error rate (BER) testing.

Use the E1/T1 G.SHDSL Two-Wire Extender/NTU to make G.703/G.704 connections. The extender/NTU features two BNC connectors and an RJ-48C jack, so it suits both unbalanced E1/T1 connections. Use this extender/NTU to connect to either a 75-ohm dual coax E1 or T1 network, or to link it to a 120-ohm E1 or 100-ohm T1 twisted-pair network interface. It supports local and remote loopbacks.