ADTRAN DSU 5600 User Manual

61200.078L1-1 DSU 5600 User Manual 1Chapter 1. IntroductionChapter 1IntroductionGENERAL DESCRIPTIONThe ADTRAN DSU 5600 is a technologically advanced, highperformance Data Service/Channel Service Unit (DSU/CSU)that provides the interface between telco provided Digital DataService (DDS) and the customer’s Data Terminal Equipment(DTE).The DSU 5600 supports both 56 kbps and 64 kbps loop servicerates and provides either synchronous or asynchronous modesof operation for the DTE interface. When the DTE interface isconfigured for synchronous operation, the DSU 5600 matchesthe selected loop rate. When the DTE interface is configured forasynchronous operation, it supports asynchronous data commu-nications over either a 56 kbps or 64 kbps DDS service. Inasynchronous mode, the DTE can be configured to operate atany of the standard asynchronous communication rates from 1.2kbps to 57.6 kbps. All setup or configuration is accomplishedwith a single eight position DIP switch that is accessible fromthe back panel of the unit.The DSU 5600 has an industry standard EIA-232 interfaceprovided on a 25 pin connector.