7.4 TROUBLESHOOTING GUIDE146 SYSTEM MAINTENANCE AND TROUBLESHOOTING7.4 TROUBLESHOOTING GUIDETable 29PROBLEM PROBABLE CAUSE POSSIBLE SOLUTIONNothing is heard from theVPS when accessing the VPSeven though APTIntegration has beenestablished.• Bad connection with PBX. • Check the System Program[130] of the KX-TA series tosee if the programming agreeswith the actual connection.The VPS does not operate. • Bad printed circuit board.• Bad connection with PBX.• Incomplete card attachment.• Change the printed circuitboard.• Check the connection betweenthe VPS and PBX.• Attach the card firmly.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.Line disconnection occurswhile transferring an outsidecall.Outside calls cannot betransferred.• Improper setting of thesequence.• Improper setting of thehooking time.• Improper setting of the CPCsignal.• Adjust the transfer sequence tothat of the connected PBX andreset.• Adjust the hooking time to thatof the connected PBX and reset.• Adjust the CPC signal to that ofthe connected PBX and reset.Unable to make outside calls. • Improper setting of the outsidecall dial mode.• Improper setting of the outsidecall dial procedure.• Reset the outside call dial mode(tone/pulse) properly.• Reset the outside line accesssequence of the connectedPBX.Unable to call an extension. • Improper setting of extensionnumbering plan.• Adjust the extension numberingplan properly.Unable to access themailbox.• Improper setting of the numberof digits in the mailboxnumber.• Readjust the number of digits inthe mailbox number.Connected terminal (RS-232C port) does not operate.• Improper connection.• Improper setting of theparameter.• Connect the cable firmly.• The terminal and VPS shouldhave the same parametersettings for Baud Rate, WordBit Length, Parity and Stop BitLength.
