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APPENDIX C - TROUBLESHOOTING CONT’DUSER GUIDEOperation problem Probable cause Action1. Unsuccessful call: Network busy•Try againNera WorldPro is notcommissioned.•Check event log for information.•Call the Net Service Provider/Distribution Partner.2. Problems with making avoice call.3. Problems with incomingvoice call.4. Problems with datacommunication:The called party is busy.”Subscriber busy” appearsin Nera WorldSet displayIncomplete dialingService not commissionedNot logged on to theInmarsat systemWrong PC settings•Wait for some time and try again.•Call another subscriber.•Always use the International prefixe.g. 004767244700.•Remember to key "#" as the last digit before startingtransmission. Not needed on Nera WorldSet.•SIM card is not accepting phone calls.•No valid GPS•Check Signal indicator•Check BGAN LaunchPad•Press Activate button and repeat the satellitepointing.•Subscriber must dial International prefix e.g.00870772420510.•Wrong MSN settings in voice device. Erase MSN indevice, or select MSN no. 20.•Voice device not properly connected to terminal.•Use BGAN LaunchPad to establish a data connection.•Verify DUN (Dial Up Network) settings. Number to dialshould be *98# (for background data via COM port)•Read Connecting to PC application guides on CD.C-6EXPLORER 100/110