61200.078L1-1 DSU 5600 User Manual 9Chapter 2. InstallationTable 2-ASwitch Settings for DTE RateDTE Rate SW 1 SW 2 SW 31.2 and 2.4 kbps Async Down Down DownSync, Scrambler Disabled Up Down Down4.8 kbps Async Down Up Down9.6 kbps Async Up Up Down19.2 kbps Async Down Down Up38.4 kbps Async Up Down Up57.6 kbps Async Down Up UpSync, Scrambler Enabled Up Up UpLoop Rate - SW 4When the SW4 switch is in the down (56 kbps) position, thenetwork interface of the DSU 5600 is configured for operation at56 kbps, and when this switch is in the up (64 kbps) position, thenetwork interface is configured for 64 kbps operation.For 64 kbps clear channel operation, there is a possibility that theDTE data sequences might mimic network loop maintenancefunctions and erroneously cause other network elements toactivate loopbacks. To prevent this, a data scrambler is enabledwhen the 64 kbps option is selected.Clear To Send (CS) - SW 5When this switch is in the down (normal) position Clear To Send(CS) follows the Request To Send (RS) lead with 250 μ ± 125 μ ofdelay. The only exceptions to this occur when network or testconditions prevent data from being transferred over the DTEinterface. During these conditions CS is turned Off.For the up (On) position CS is forced On all the time.