Encore 24 PORTS NWAY SWITCHING HUB User's Guide Page 139
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Diagnostics and Troubleshooting 6-17
6
¥ Check all fuses for opens and replace as needed. If the DSU/CSU blows fuses
continuously, call Digital Link technical support.
The DSU/CSU System does not Dial Out when an Alarm Occurs
¥ Make sure the connection between the Comm Port and the modem is a crossover
(null) modem connection.
¥ A DCE port is represented the same way as the modem port.
¥ Make sure Connection is set to Modem and two valid telephone numbers are set in
Phone Number 1 and Phone Number 2 in Menu 8 Alarm II.
¥ Make sure Block all Alarms is set to No in Menu-7 Alarm and the occurring alarm is
set to Enabled.
¥ If the above steps do not correct the problem, call Digital Link technical support for
assistance.
There is no FDL Communication with the Remote/far End System
¥ Make sure the DSU/CSU is conÞgured for ESF framing and the Digital Link FDL
protocol is enabled in the Menu-4 Main ConÞguration menu. FDL communications
do not exist in D4 framing.
¥ Make sure you have no DACS devices between your local and remote DSU/CSUs. If
a DACS device is in your T1 circuit, you will not have FDL communication
(regardless of your framing format).
¥ If the above steps fail to solve the problem, call Digital Link technical support for
assistance.
The ESF User Registers do not Clear from the Network Carrier
¥ Make sure the ANSI FDL protocol is set to Enabled in the Menu-4 Main
ConÞguration menu.
- Encore Multi-port 1
- DSU/CSU User Guide 1
- Disclaimer 3
- ISO RegistrationCompliance 4
- Table of Contents 5
- Chapter 2, Installation 2-1 6
- Chapter 3, ConÞguration 3-1 7
- Table of Contents ix 9
- Table of Contents xi 11
- Glossary Glossary-1 13
- Index Index-1 13
- List of Figures G 15
- List of Figures xvii 17
- List of Tables G 19
- List of Tables xxi 21
- Preface G 23
- Typographic Conventions 25
- To follow a link: 26
- To retrace your viewing path: 26
- Examples 26
- Returning a DSU/CSU 28
- Send Us Your Comments 28
- Introduction 29
- DL100 30
- Service 31
- Data ports 32
- Access/Management Features 32
- Compliancy 33
- About the Telnet Utility 33
- Installation 35
- Required Location 36
- Check the Equipment 36
- Equipment Model Numbers 37
- Installation 2-5 39
- Connecting to Power 40
- Installation 2-7 41
- Connecting to the T1 Network 46
- About the Cabling 46
- Determine Correct Distance 47
- ConÞguration 49
- Check the Comm Port Settings 50
- Connecting an ANSI Terminal 51
- ConÞguration 3-5 53
- Access Rights 54
- The Unit ID 55
- Log On from a Terminal 56
- Log On Through Telnet 56
- Log On in Other Conditions 57
- Logging Off 57
- Editing a Parameter 59
- ConÞguration 3-13 61
- (INTERNAL) is used 66
- DSU/CSU and the 66
- ConÞguring the Data Ports 67
- DSU/CSU inverts the 68
- DSU/CSU removes the 1s 68
- Allocating Timeslots 69
- Three Allocation Methods 69
- ConÞguration 3-23 71
- ConÞguring for SNMP 76
- ConÞguration 3-29 77
- How Alarms Are Reported 81
- Menu-7 Alarm I 83
- DSU/CSU is 84
- Menu-8 Alarm II 85
- DSU/CSU waits 89
- Modem Initialization 90
- ConÞguration 3-43 91
- Monitoring and 93
- Management 93
- Monitoring Status 94
- Menu-1 Main Status Parameters 95
- network signal is missing 96
- AUX DTE Status 97
- DATA DTE Status 97
- Menu-2 Data DTE Status 99
- Data DTE Status Parameters 100
- Monitoring Performance 101
- (Figure 4-4) 103
- Displaying the Event Log 107
- Event Log Parameters 108
- The Front Panel 111
- The Interface 112
- Using the Front Panel 113
- (▲) or Down (▼) arrow 113
- (▲) and Down (▼) arrows at 113
- Changing Information 114
- Monitor Submenus 115
- Test Submenus 116
- Running a TEST PATTERN 117
- ConÞguration Submenus 118
- The Front Panel 5-9 119
- The AUX CONFIG Menu 120
- Required Information 120
- Keep a Record 121
- Diagnostics and 123
- Troubleshooting 123
- Adding a Caution Flag 124
- Menu-9 Diagnostics Parameters 126
- 1:1 Pattern QRW Pattern 128
- The Self Test 129
- The Loop DTE Test 129
- The Loop NET Test 130
- The Loop Payload Test 131
- The DTE/NET Test 132
- The Loop Up Remote Test 133
- The Pattern Tests 135
- The Send All Zeroes Test 136
- The Send 1:2 Test 136
- Required Tools 137
- The DSU/CSU does not Power Up 138
- The NET LED is Constantly Red 141
- LEDs do not Illuminate 144
- Running Loopbacks 146
- Running the Pattern Test 147
- Technical SpeciÞcations 149
- DS1 Interface 150
- System Timing 150
- Front Panel 151
- Power Options 151
- Alarm Contacts 152
- Environmental 152
- Regulatory 153
- Diagnostics and Tests 154
- Front Panel LEDs 155
- LEDs (Continued) 157
- T1 line. Non-intrusive 158
- T1 network. Non-intrusive 158
- Technical SpeciÞcations A-11 159
- Factory Default ConÞguration 161
- Not Assigned 162
- Connector Pin 165
- Assignments 165
- DTE Port Pin Assignments 166
- 3 Send toward DTE Tip (T1) 166
- DTE Ring (R1) 166
- 4 Frame Ground 166
- (I/O to all DSUs only) 168
- Adapter Pin Assignments 169
- DTE Clock Rates 170
- ConÞguration Worksheet 171
- SNMP ConÞguration 173
- Glossary 175
- Glossary G-3 177
- Glossary G-5 179
- Glossary G-7 181
- See also 183
- Glossary G-11 185
- Glossary G-13 187
- Glossary G-15 189
- Glossary G-17 191
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