Verilink ConnecT 56K DSU (896-502110-001) Product Manual - Manual (Page 11)

ConnecT 56K DSU User Manual 1-1
Chapter
1
Introduction
This chapter provides an overview of the Verilink ConnecT 56K DSU,
Digital Data Service (DDS), and Switched 56 service.
Unit Overview
The stand-alone Verilink ConnecT 56K DSU provides a reliable, high
speed data connection from a customer’s Data Terminal Equipment
(DTE) through Digital Data Service (DDS) lines, DDS secondary channel
services (DDSII), or 4-wire Switched 56 Network (SW56) lines. The
ConnecT 56K DSU supports both synchronous and asynchronous data
communication over the DDS or SW56 networks.
There are three easy methods for configuration:
1. A front panel dial pad and a LCD display provides quick and easy
access to configuration menus.
2. “AT” commands or by V.25 bis commands inband.
3. Remotely located ConnecT 56K DSU units can be configured by
using the front panel, AT commands, o r V.25 bis.
The ConnecT 56K DSU provides both V.35 and RS-232 electrical and
physical DTE interfaces to accommodate a variety of applications. A
second RS-232 interface is provided if the unit is configured for use on
DDS with secondary channel services. The ConnecT 56K DSU is
compatible with AT&T Accunet and U.S. Sprint SW56 as well as
standard DDS or DDS II services. To insure a reliable connection on
those services, the unit features an extended receiver capability which
permits operation over long loops (3.4 miles or 5.5 km at 26 awg).