T r o u b l e s h o o t i n g a n d D i a g n o s t i c s 201SDSL DiagnosticsTo perform SDSL diagnostics, type “S” on the Diagnostics menu. The IADdisplays the SDSL Diagnostics menu:Figure 7.4 SDSL Diagnostics MenuTo perform a type of transmission, type the specific option. For option “P”,select the level to begin the transmission. Press any key to terminate the test.Troubleshooting the IADThis section provides information for troubleshooting symptoms associatedwith the operation of the IAD. The table below describes symptoms andprobable causes, and suggests what action can be taken to correct theproblem.Symptom Probable Cause Corrective ActionPower indicator is not lit Power is not availableto the IADEnsure the power cord issecurely connected.Ensure the power cord isplugged into a live outlet.Ensure the power switch is on.If powered by an adapter,ensure the correct adapter isused.LAN Link indicator is not lit Incorrect EthernetconnectionEnsure an Ethernet cable isproperly connected to the IADand its upstream connection.No dial tone is present Incorrect PVC/DLCIset for voice channelVerify these settings:VPI: 0 to 255VCI: 0 to 65535DLCI: 16 to 1023(default PVC 0/39; DLCI 33)
