Telenetics 2185 manual Leased-Line Backup Application Example, Switch Three

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		Telenetics 2185

Table 3-8. Switch Three

Switch
Segment	Setting		Reason

3-1	Up		Main Channel connection to DTE

3-2	Up		Subchannel one connection to DTE

3-3	Up		Subchannel two connection to DTE

3-4	Down		Subchannel three connection to DCE

3-5	XX		Subchannel four not used

3-6	XX		Subchannel five not used

Leased-Line Backup Application Example

Another common application example for your 2185 is the Leased-Line Backup application. In this example, the 2185 is again used to connect a mainframe to remote users. The primary connection is through a digital network via DSUs (Digital Service Units). The backup route is through leased-lines via dial modems. Figure 3-10 shows this application.

3-18

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Contents Telenetics Proprietary Material Page Page Contents Ordering Information Introduction FeaturesData Interface Main Channel Broadcast Subchannel ContentionSynchronous Data Retiming Buffer Applications Anti-StreamingPort-Sharing Mode Port-Sharing ApplicationModem-Sharing Mode Modem-Sharing ApplicationCo-Located Terminals CascadingLocal Cascading Application Remote Cascading Application Specifications SpecificationsTelenetics Customer Responsibilities Site Selection and PreparationUnpacking Packing MaterialsEquipment Supplied Damage/Material ShortagesInstallation Procedure Equipment AssemblyInstallation Tools Required Mechanical InstallationRear Panel Assembly Straight-Through Cable Interface Telenetics Operating Controls Indicators Front View Door ClosedInside Front Panel Function Switch One Function SwitchesEnabling/Disabling Subchannels Data Rate Selection Using Switch Segments 1-6 to Function Switch TwoFunction Switch Two Summary Switch Segment 2-1 Contention Mode Switch Segment 2-4 Anti-Streaming Enable/Disable Clock Routing ConfigurationsSwitch Segment 2-7 Main Channel RTS/DCD Strapping External Clock Reference with Main Channel DTE External Clock Reference with Main Channel DCE Internal Clock Reference with Main Channel DTE Internal Clock Reference with Main Channel DCE Subchannel 1 DCE Clock Reference with Main Channel DTE Subchannel 1 DCE Clock Reference with Main Channel DCE LED Indicators Configuration ExamplesFunction Switch Three DTE/DCE OptioningDigital Bridging Application Example Digital Bridging Application Switch One Switch TwoLeased-Line Backup Application Example Switch Three10 Leased-Line Backup Application Switch One 10. Switch Two 11. Switch ThreeMultimaster Multidrop Application Example 11. Multimaster Multidrop Application12. Switch One Settings 2185 a 14. Switch Three Settings 2185 a 13. Switch Two Settings 2185 a15. Switch One Settings 2185 B 16. Switch Two Settings 2185 B 17. Switch Three Settings 2185 BMain Power Connection 18. LED Status Indicator Functions12 Power Connection POWER-DOWN Procedure OperationMaintenance Philosophy Preventive MaintenanceCorrective Maintenance Recovery from Anti-Streaming Alarm ConditionReturning Defective Equipment for Repair Installations in the USAGeneral Packing Information Installations Outside the USA or Canada Telenetics Ordering Information Telenetics Ordering InformationTelenetics Glossary Glossary-2 Glossary-3 Glossary-4 Index INDEX-2 INDEX-3 INDEX-4