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Troubleshooting
9-33
9161-A2-GH30-30
April 1998
Digital Loopbacks
A Digital Loopback loops the digital voice signal received from the T1 interface
back to the same interface, just before reaching the D-to-A converter on the voice
port.
496-1520
0
to: T1 Interface
Digital Loopback
CODEC
D to A
Converter
The following tests cannot be running when a digital loopback test is initiated:
Analog Loopback, DRS or Quiet Test Tone on the same port
Analog Loopbacks
An Analog Loopback loops the analog voice signal received from the T1 interface
back to the same interface, after passing through the Digital-to-Analog converter
and Analog-to-Digital converter on the voice port.
496-15201
to: T1 Interface
Analog Loopback
CODEC
D to A
Converter
The following tests cannot be running when an Analog Loopback test is initiated:
DRS or Quiet Test Tone, or Digital or Line Loopback on the same port
- MODEL 916x/926x 1
- T1 ACCESS MUX 1
- Printed on recycled paper 2
- WARNING: 3
- Important Safety Instructions 4
- Government Requirements 5
- United States 5
- CAUTION: 6
- Contents 7
- 4 User Interface 8
- 5 Setting Up 8
- 6 Security 9
- 8 Operation and Maintenance 10
- 9 Troubleshooting 11
- 9161-A2-GH30-30 12
- April 1998 12
- B IP Addressing 13
- C SNMP Traps 13
- D SNMP Cross-Reference 13
- F Technical Specifications 14
- G Equipment List 14
- Glossary 14
- About This Guide 15
- Conventions Used 16
- Product-Related Documents 17
- Reference Documents 18
- About the T1 Access Mux 19
- Components 20
- Fully Loaded 5-Slot Housing 21
- Fully Loaded Access Carrier 21
- Features 24
- Menu-Driven User Interface 25
- Embedded Data Link (EDL) 26
- Direct Data Link (DDL) 26
- Facility Data Link (FDL) 26
- COM Port 26
- Management and Control 29
- 496-15182 30
- 496-1518 32
- Applications 35
- Drop & Insert 40
- Off-Premises Extension (OPX) 42
- Direct Inward Dial (DID) 42
- Video Conferencing 43
- Screen Field Types 46
- What Affects Screen Displays 47
- Screen Work Areas 47
- Screen Format Description 48
- Navigating the Screens 49
- Screen Function Keys 50
- Selecting from a Menu 51
- Selecting a Field 51
- Making Input Selections 51
- Accessing the User Interface 52
- Setting Date and Time 58
- Configuration Option Areas 59
- Saving Configuration Options 60
- FDL does not appear if: 64
- Configuring Ports 70
- Configuring Voice Ports 78
- For FXO Voice Ports: 80
- Wink Delay only appears if: 81
- For FXS Voice Ports: 83
- Configuring OCU-DP Ports 86
- Copying Port Configurations 89
- Example Channel Allocation 92
- Assigning OCU-DP Data Ports 100
- " Procedure 100
- Clearing Port Assignments 101
- Setting System Options 102
- Setting Up 103
- User Interface 106
- Communication Port Options 106
- Configuration Edit/Display 106
- External Device 111
- Control Characters 114
- Sequence ASCII Hex 114
- Procedure 115
- Management and Communication 121
- Communication Protocol 121
- SNMP Management 124
- Setting Up SNMP NMS Security 126
- Setting Up and Placing a Call 132
- Security 133
- Procedure 134
- Limiting Telnet Access 135
- Controlling SNMP Access 137
- Creating a Login 140
- Deleting a Login 141
- Displaying System Information 143
- Displaying Voice APM Status 145
- Displaying Network Channels 149
- failed 150
- Displaying DSX-1 Channels 151
- Displaying Port Assignments 153
- Statistics 154
- Status Information 158
- System Status Messages 158
- Health and Status Messages 159
- What It Indicates What To Do 160
- Test Status Messages 166
- Message What It Indicates 167
- Operation and Maintenance 169
- Logging Out 170
- Starting a Session 170
- Ending a Session 172
- Supported SNMP Traps 173
- Call Retry to Enable 174
- Displaying Directory Numbers 174
- Changing Device Name 175
- Hot Swapping of APMs 176
- NAM Removal 177
- Downloading Software 177
- File Transfer 177
- Performing an Upgrade 178
- Backing Up Your Configuration 180
- Resetting the T1 Access Unit 181
- Troubleshooting 183
- 496-15051 184
- Loss of Signal (LOS) 185
- Loss of Frame (LOF) 185
- Excessive Error Rate (EER) 185
- Yellow 185
- T1 NAM Test Jack Functions 186
- Test Jack Name Function 187
- Test Jacks 189
- Test Jacks 190
- 9109 SYNC DATA 191
- OCU-DP APM Front Panel LEDs 192
- Voice APM Front Panel LED 193
- System Alarm Relay 193
- ASCII Alarm Messages 194
- System Error Messages 200
- Tests Available 203
- Interface Tests 204
- Remote Loopbacks 208
- Data Port Tests 210
- Voice Port Tests 214
- Digital Loopbacks 215
- Analog Loopbacks 215
- Force and Monitor Signaling 217
- OCU-DP Tests 219
- OCU-DP Local Loopback Tests 220
- 98-15958 221
- OCU-DP Remote Loopback Tests 224
- Device Tests 224
- Test Timeout 225
- Starting and Stopping a Test 225
- Aborting All Tests 226
- Menus and Configuration 227
- Worksheets 227
- Configuration 228
- Recording Configurations 229
- Network See Table 5-1 230
- Configuration Option Settings 230
- DSX-1 See Table 5-2 231
- Default in [Bold] 232
- Voice Ports 233
- E&M Voice See Table 5-4 233
- FXO Voice See Table 5-5 234
- FXS Voice See Table 5-6 235
- OCU-DP Ports See Table 5-7 236
- Default in 238
- Assigning Cross Connections 241
- 9161-A2-GH30-30April 1998 244
- IP Addressing 245
- IP Addressing Scheme Examples 247
- If using . . 251
- Then . . 251
- SNMP Traps 253
- Trap: authentificationFailure 254
- Traps: linkUp and linkDown 254
- Traps: Enterprise-Specific 256
- SNMP Cross-Reference 259
- User Interface Command 260
- SNMP MIB Object 260
- Cables, Connectors, and Pin 275
- Assignments 275
- COM Port-to-Modem Cable 277
- Gender Adapter/Changer 277
- T1 Network Interface Cable 278
- DSX-1 Port Interface 279
- T1 Line Interface Cable 279
- EIA-530A Port Interface 280
- 25-Pin Plug 281
- Connector 281
- 12 Inches 281
- 34-Position Socket 281
- DTE’s RS449 connector 283
- 496-1514 285
- Voice APM Cables 286
- E&M Voice APM Connector 287
- Port SignalFunctionPin 288
- Extension Cables 289
- 97-15171-02 290
- 97-15172-02 292
- P1 Pin # 293
- P2 Pin # 295
- P3 Pin # 297
- OCU Port 299
- T1 Mass Termination Cable 300
- Technical Specifications 301
- Specification Criteria 302
- Equipment List 309
- Equipment Feature Number 310
- Yellow Alarm 316
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