Black Box BRTS-100 manual Comprehensive troubleshooting flow chart 2

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BRTS-100 ISDN TEST SET

13.a. If the terminal works, there’s no need to proceed any further.

b.If the terminal does not work, proceed to step 14.

14.Perform the PAIR REVERSAL test procedure (see page 22).

15.Put the circuit into its normal operating configuration. (Connect all terminals to the S/T interface.)

16.a. If the terminal works, there’s no need to proceed any further.

b.If the terminal does not work, proceed to step 17.

17.At this point, you’ve determined that there’s nothing wrong physically with the S/T interface. The problem is either within the terminal or NT1—or possibly the ISDN network. Perform the MONITOR test procedure (see page 26).

A

	USING PASSIVE	NO
	USING PASSIVE	MONITOR
	BUS?	MONITOR
	BUS?
		YES
	PB1 - CHECK	DONE
	TERMINATIONS	DONE
	TERMINATIONS

TERMINAL	NO	PB2 - PAIR	TERMINAL
WORK?		REVERSAL	WORK?

NO

YES

YES

GOOD LINE,	GOOD LINE,
DONE	DONE

Figure 4-4. Comprehensive troubleshooting flow chart (2 of 2).

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Contents BRTS-100 Isdn Test Set FCC Statement BRTS-100 Isdn Test SET NOM Statement Trademarks Used in this Manual Contents Specifications Introduction How to Use This ManualOverview 100 Est FeaturesOperation Connecting the UnitBRTS-100 Isdn Test Set controls and indicators Passive BUS Controls and Indicators Feature Buttons Powering Up the UnitIndicators Test Status PASS/FAIL Lights Reflects test status Modes of OperationTest Configuration 1 Point-to-Point NT1 Figure Test ProceduresTest Procedures Comprehensive Troubleshooting Procedure Comprehensive troubleshooting flow chart 1 Comprehensive troubleshooting flow chart 2 Phantom Conclusion Light Check PowerCheck Loop Check PowerTest Procedures Check loop flow chart 1 Check loop flow chart 2 Check loop flow chart 3 Test Procedures Passive Bus-Check Terminations Passive Bus Configuration Check TerminationsTest Procedures Proper device terminations diagram Pair Reversal Pair reversal flow chart 1 Pair reversal flow chart 2 10. Pair reversal diagram Monitor 11. Monitor flow chart Technical Reference Power-Source IndicatorsActivation/Deactivation Modes Activation/deactivation procedureReceive Test Line Test/Transmit See FigureLevel Test Transmit and line test DC Continuity AC ImpedanceAC impedance Two Test Set units used for tracing SpeakerBattery Replacement Appendix MaintenanceFigure A-2. Replacing the 8-Pin Jack Connectors Pin Jack ReplacementCopyright 2002. Black Box Corporation. All rights reserved