The ADTRAN DSU III S4W is a technologically advanced, high-performance data service unit/channel service unit (DSU/CSU). It provides an interface between 4-wire Switched 56 and the customer's data terminal equipment (DTE). The unit supports both synchronous and asynchronous data rates. Dialing is accomplished either manually (invoking one of the stored numbers) or automatically.
Features:
Additional features of the DSU III S4W include a DTE-to-service rate matching feature, for both switched and dedicated modes, which allows slower rate DTE equipment to communicate over a higher speed digital line.
The unit responds to standard loopback commands from the service provider and provides extensive test capabilities such as V.54 remote loopback.
The front panel keypad of the standalone unit operates a simple menu structure which accesses setup, selection of test modes, local and remote configuration, manual dialing or automatic dialing from stored numbers.
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