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74
CSU/DSU MS DBU
12.1.3 E
XITING A
T
EST
During a test, press Quick to access the Exit Test/Display Status menu or press
Cancel to return to the Main menu. The Exit Test/Display Status menu provides
the following options, which are available only after a test has been initiated
(see Figure 12-4):
Exit Test Exits the current test and returns to the Main menu.
Display Status Reenters test display.
Figure 12-4. Complete Test Menu.
12.2 Troubleshooting
This section is intended to provide a quick and easy means of diagnosing suspected
problems associated with local or remotely attached Black Box DSU/CSUs.
12.2.1 M
ESSAGES FROM THE
DSU/CSU
Messages on the LCD display and LEDs give information concerning the status of
the unit and the local loop. If the Alarm LED is On, one or more of the messages
shown in Table 12-1 are displayed on the LCD.
2=TEST
1=LOCAL UNIT
2=REMOTE UNIT
3=DBU CONNECTION
1=DIAL STORED #
2=ENTER DIAL #
3=REDIAL LAST #
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
7=DATA FROM DTE
1=DTE & LOOP(LL)
2=LOOP ONLY(RT)
3=DTE ONLY
4=DTE WITH TP
5=TEST PATTERN
6=SELF TEST
ENTER TEST UNIT
ADDRESS:0
- CSU/DSU MS DBU 1
- TRADEMARKS 2
- INDUSTRY CANADA 3
- NOM STATEMENT 4
- ELECTRICAL SAFETY STATEMENT 4
- INSTRUCCIONES DE SEGURIDAD 4
- ABOUT THIS MANUAL 6
- About This Manual 6
- FCC REGULATIONS 8
- Contents 12
- CONTENTS 14
- 1. Introduction 16
- 1.2 DDS Operation 17
- 1.3 Switched 56 Operation 17
- 1.4 SNMP 17
- CHAPTER 1: Introduction 18
- 1.5 TELNET 18
- 1.6 Dial-Backup Operation 18
- 1.7 Dial-Backup Modules 18
- 2. Installation 20
- 2.2 Rear Panel 21
- CHAPTER 2: Installation 22
- 3. Operation 25
- CHAPTER 3: Operation 26
- 4. Applications 31
- CHAPTER 4: Applications 32
- 4.2 Dial-Backup Application 34
- 5. Configuration Overview 37
- 6.1 Loop Rate 44
- 6.2 Network Address 44
- 6.3 Remote Configuration 45
- 6.4 Network Type 45
- 6.5 Clock Source 45
- 7. Configuring DTE Options 46
- Front Panel AT Description 48
- 7.1 DTE Rate 49
- 7.2 Connector Type 49
- 7.3 Data Format 49
- 7.4 DTE Command Option 50
- 7.5 Transmit Clock 50
- 7.7 Anti-Stream 51
- 7.8 CD Options 51
- Always” is Enabled 54
- 9.1 Phone Numbers 56
- 9.2 SW56 Auto Answer 56
- 9.3 DBU Options 57
- PTIONS FOR 60
- 10. Configuring Management 64
- Functions 64
- 10.3 IP Options 65
- 10.4 SNMP Options 66
- 10.5 TELNET Options 67
- 11.1 Manual Command 70
- 11.2 Time/Date 71
- 11.3 Software Revision 72
- 11.4 LAN MAC Address 72
- 11.5 Serial Number 72
- 12.1 Test Overview 73
- Press 1 to clear errors 74
- Press 2 to inject an error 74
- Use the Up and Down arrows 74
- 12.2 Troubleshooting 75
- 12.3 Local Unit Diagnostics 78
- Figure 12-6. Loop Only Test 80
- 12.4 Remote Unit Diagnostics 83
- Local Unit Initiates Test 84
- 12.5 DBU Connection 85
- 13. Activating Dial Functions 87
- Dial-Backup Information 89
- TATUS OF 90
- EADS AND 92
- Appendix A. Pinouts 93
- APPENDIX A: Pinouts 94
- Appendix B. AT Commands 97
- APPENDIX B: AT Commands 98
- Appendix C. Terminal Menu 99
- Structure 99
- C.1 Status Menus 103
- DSU CONFIGURATON 104
- Figure C-10. Utility Menu 106
- C.3 Local/Remote Test Menus 107
- C.4 Dial SW56/Dial DBU 107
- Figure C-14. Dial DBU Menu 108
- Appendix E. DSU-to-Modem 112
- Interconnect 112
- Appendix F. Specifications 113
- APPENDIX F: Specifications 114
- SNMP and TELNET 114
- Clocking 114
- Switched Mode Dialing Options 114
- Diagnostics 114
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