Front Panel Operation3-93610-A2-GB46-60 December 1996Backup BranchThe Backup (Bckup) branch appears when theconfiguration option Network Interface (NetIntf) is set toAggSw or Forc or a DBM is installed. The DSU providesan internal aggregate data stream for diagnostics, standbymode, and framing on the alternate V.35 or EIA-232interface of Port 1. The aggregate port can be connectedto an external dial backup unit (DBU).496-12971-06TOP-LEVEL MENULocal RemotTest CtrlStatMsgsAddressConfgBckupAbort Bkup Dial DrBU Disc ÕDial ÕDDS AggSw ÕNetIFor additional use of the Backup branch, refer to theTDM/MCMP/Digital Bridge Options Supplement,Document No. 3610-A2-GB48, and the DBM OptionsSupplement, Document No. 3610-A2-GB49.Test BranchThe Test branch provides extensive testing capabilitiesfor the DSU, the DDS circuit, the DBM, and the backupcircuit. When the tributary DSU receives a test requestfrom the control DSU, the DSU aborts any locallyinitiated test in progress.NOTERunning a test can affect yourapplication data or may causeyour application session to bedropped depending upon theprotocol, front-end processor,and time-out parameters. Nodata or acknowledgmentmessages will be transmittedwhile the test is in progress onthe active core.496-12972-03TOP-LEVEL MENULocal RemotBckup CtrlStatMsgsAddressConfgTestDSU DBMAbort Devic Lpbk LampLL DTE DL RLStart Start StartPortSelectPortSelectPortSelectPortSelectAddressAddress AddressRunTim# BlocksDispl ClrEEDT BERTPortSelectSubn SelectiveDToneAbortAbort allows you to stop a test that is running. TheDSU is not allowed to run any other test until the test inprogress is aborted or completes.There are two selections for aborting a test:• Subn (Subnetwork) displays only at the controlDSU. This selection terminates any test running atthe control DSU or at a tributary DSU or DBMassociated with the control.• Selective terminates whatever test is in progress atthe local DSU. Does not appear in Remote modewith MUX Funct set to CBrdg or NetIntf set toAggSw or Forc.After selecting either Subn or Selective, the testterminates and the front panel displays CommandComplete.