Furuno IB-681 manual Call Sequence, Direct call setup sequence

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3.4 Call Sequence

3.4.1 Direct call setup sequence

CES

NCS

FELCOM

Call to

subscriber

Reply from subscriber

SES RQ

CESI

Ch. assignment req. SU

Channal assignment SU

NCSI

HSUB

Scr. vec. ack SU

HSUB

Fill in SU

CES connect SU

HSUB

Access req. SU

NCSA

Service addr. SU scr. vec. advise SU HSUB

Ret. carrier ID SU

HSUB

HSUB

SES connect SU

Calling operation (DTR ON)

DSR ON

CTS/DCD ON

Figure 5 Direct call setup sequence

12

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Contents Page B . N o . O M E 5 6 0 9 Safety Instructions Safety Information for the OperatorSafety Information for the Installer Electrical Shock HazardTable of Contents Appendix Usage Tips Declaration of conformity to typeFeatures IntroductionEquipment List Installation Materials CP16-01601Installation Materials CP16-01602 Complete SetInstallation Materials CP16-01605 Installation Materials CP16-01603Optional Equipment IB-281 System ConfigurationIB-181 IB-681Control Description OverviewFront panel Rear panel IB-681, rear viewDIP switches SettingsSwitch Panel Settings Data rateSW2 Terminal interface OID/DID and IMN Settings Terminal Unit SettingsDeleting subscriber number Registering, Deleting Subscriber NumberRegistering subscriber number Confirming subscriber numberCalling OperationAutomatic HSD call Tone Name Frequency Manual callInterval Receiving Automatic call mode and receiving operationSW1 State Remarks Command Name Description V.25bis Command, IndicationReceiving and automatic data rate switching SW3 State RemarksCommand Description Indication DescriptionDirect call setup sequence Call SequenceAddress call setup sequence Address call setup sequenceManual call setup sequence Manual call setup sequenceAutomatic call clear sequence Call clear sequence from landManual call clear sequence Manual call clear sequenceCleaning Maintenance & TroubleshootingMaintenance Resetting the circuit breakerGeneral Troubleshooting for the UserThen CallingMounting InstallationMounting procedure Mounting locationWiring Wiring between HSD modem and routerModifying the RF Conv board in the communication unit RS-449 InterfaceAntenna cable Position of R135 Length CPU2 Board 16P0133R135 RF Conv BoardRF Conv Board CPU2 Board J10Mounting of connector assy Rear Panel Board Sub 9 pinGround Wiring between HSD modem and communication unitJ11 Router setting for network connection Circuit delayPropagation delay Communication with other makes of Inmarsat-B terminalsNetwork configuration Syuchronous -asynchronous adapter Land Earth Station IOR Etilat IB-681 Page Page Page Index