ADTRAN TSU LT User Manual

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ADTRAN TSU LT User Manual Manual pdf 50 page image

Chapter 5. Configuration Menu TSU LT User Manual50 © 2002 ADTRAN, Inc. 61202060L4-1CTSUsed to control characteristics of CTS.Choices: NORMAL (see Table 5-1), FORCE ONDCDData Carrier Detect - Indicates to the DTE when a valid signal is being received at the Network Interface.Choices: NORMAL (see Table 5-1), FORCE ONDSRData Set Ready - This signal indicates to the DTE when the DCE is turned O N and ready foroperations.Choices: NORMAL (see Table 5-1) or FORCE ON.INBANDInband Configuration Channel - Used to enable/disable an 8 kbps remote configuration channel. SeeFigure 5-7). When this option is set to O N, the first DS0 occupied operates in 56K mode and the DTEclock rate is reduced by 8 kbps. The TSU LT uses this 8 kbps channel to send and receiveconfiguration data across a T1 span. As shown in Figure 5-7, this allows the PC connected to thechain-in port on TSU LT A to monitor/configure both TSU LT A and B. This feature is useful whenFDL connectivity is not available across the T1 span.The 8 kbps channel is only taken out of the first DS0. If two 64K DS0s are mapped, the DTE ratewould be 120 kbps instead of 128 kbps. This menu option can also be set to A UTO which activates theInband Channel only when commands are sent from T-Watch to the remote unit (TSU LT B inFigure 5-7). If no T-Watch activity is detected for 10 minutes, the Inband Channel is deactivated.Figure 5-7. Inband Remote ConfigurationTable 5-1. Normal Mode OperationNORMAL MODE OPERATIONConditions which cause the Port Control Signals to be deactivatedSIGNAL RTS V.54 LOOP BK 511 TST ON SELF-TESTACTIVE NETWK TESTACTIVE NO DS0MAPPED NETWORKALARMCTS Follows OFF OFF OFF OFF OFF OFFDCD — — — OFF — OFF OFFDSR — OFF OFF OFF OFF OFF —Where “ — “ = don’t care