7.4 TROUBLESHOOTING GUIDE172 Installation Manual7.4 TROUBLESHOOTING GUIDETable 7-5PROBLEM 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 (see in 1.4VOICE MAIL INTEGRATION).• Check the "1-4 VPS (DPT) PortAssignment" screen of the KX-TD500, or System Programme[126] of other KX-TD seriestelephone systems to see if theprogramming agrees with theactual connection.Unable to utilise some ofthe DPT Integrationfeatures, 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.• Have the unit repared by yourPanasonic dealer.• Check the connection betweenthe VPS and PBX.• Insert the card firmly into thecard slot.Dialling is not recognised. • 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 B-40 in B7.3PBX Interface Parameters).
