SYSTEM MAINTENANCE AND TROUBLESHOOTINGInstallation Manual 1537.4 TROUBLESHOOTING GUIDETable 30PROBLEM PROBABLE CAUSE POSSIBLE SOLUTIONNothing is heard from theVPS when accessing theVPS.• Improper connection of jacks.• Bad connection with PBX.• Confirm that you are using thecorrect extension number forthe VPS. Ask your SystemAdministrator.• Check if the jacks of the VPSare connected to the properjacks of the PBX (see1.4 DIGITALINTEGRATION).• Check the System Programme[130] of the KX-TA seriestelephone systems to see if theprogramming agrees with theactual connection.• Check the System Programme[117] of KX-TD seriestelephone systems to see if theprogramming agrees with theactual connection.Unable to utilize some of theDPT Integration features,even though DPTIntegration has beenestablished properly.• Your PBX cannot support thefeature.• The software version of yourPBX is lower than required.• Consult your dealer.The VPS does not operate. • Bad printed circuit board.• Bad connection with PBX.• Incomplete card insertion.• Change the printed circuitboard.• Check the connection betweenthe VPS and PBX.• Insert the card firmly into thecard slot.Dialling is not registered. • A pulse phone is being used bymistake.• Improper setting of integrationmode.• Change to a touch tone phone.• Adjust the integration modeproperly between the VPS andyour PBX (see "IntegrationMode" in Table 71 inB7.3 PBX InterfaceParameters).
