8. Testing8-6 May 2002 8700-A2-GB20-40DTE LoopbackDTE Loopback loops the DSX-1 or G.703 signal back to itself, retaining (bipolarviolation) BPV transparency. Also: If the DSX-1 or G.703 port is in a DS0 cross-connection, the time slotscross-connected to the DSX-1 or G.703 port are sent all ones. If the DSX-1 or G.703 port is in Bypass mode or a DS1 cross-connection, allones are sent to the corresponding port and data received on the connectedports will be ignored.ProcedureTo run a DTE Loopback:1. Position the cursor at the Start command next to DTE Loopback on theNetwork & DSX-1 or Network & G.703 Tests screen.2. Press Enter.The Start command is changed to Stop. Status is changed to Active.3. To manually stop the test, verify that the cursor is positioned at the Stopcommand.4. Press Enter.Status is changed to Inactive.The DTE Loopback cannot be started when any other loopback test is in progress.CAPDSLPortDSX-1or G.703PortCAP T1/E1LIUFramerFramerTransceiver02-16614-01All Ones
