Zhone 3821Plus User's Guide Page 129
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
C-13821-A2-GB20-40 January 1999
Troubleshooting
Overview C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Firmware Download C-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Download Failure C-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
This appendix points out basic problems that can occur
when operating a 3821Plus modem. Use Tables C-1
through C-6 to check out these problems. If you are
having data communication difficulties, such as periodic
character loss, random errors, or constant format errors,
use the loopback tests associated with the &T command.
With these tests you can usually isolate the fault in your
system by using the process of elimination. If problems
continue to occur, contact your service representative.
If you would like to download the latest 3821Plus
firmware from the Automatic Firmware Download
Center, see the instructions at the end of this chapter. If
you would like to copy the software in your modem to a
remote 3821Plus modem, see the &&P1 command in
Chapter 4.
Table C-1
Modem Health
Symptom
Action
Modem did not pass
power-up self-test
Contact the Customer Assistance Center (1-800-237-0016).
LEDs do not light
Verify that the modem card is fully seated in its slot.
Verify that the power supply for the 3000 Series Carrier is properly installed and is receiving
power.
A problem is suspected
after the power-up self-test
Perform a self-test using the AT&T9 command.
Perform a local analog loopback with a Pattern test. If the modem consistently registers
errors contact the Customer Assistance Center
errors, contact the Customer Assistance Center.
If the modem passes the above tests and a problem still exists, then the problem is likely
not with your modem.
C
- COMSPHERE 1
- Important Safety Instructions 3
- United States 5
- United Kingdom 6
- Ringer Equivalence Number 6
- Connection to Leased Lines 6
- All European Countries 7
- Safety Notice 7
- Restrictions 7
- Table of Contents 9
- COMSPHERE 3821Plus Modem 10
- Table of Contents 11
- Objectives and Reader 13
- Assumptions 13
- How to Use This Manual 13
- Related Documents 14
- Introduction 15
- Status Indicators 16
- Table 1-1 17
- Color Indicates 17
- SDCP Operation 18
- Modem Installation 19
- 495-14797 22
- Front Panel 22
- 495-14800 22
- 496-14801-01 23
- 495-14829 24
- SDCP Menus 27
- Menu Structure 28
- Modem Status Messages 29
- SDCP Menus 31
- Modem Select Branch 33
- Quick Configuration Display 33
- Call Setup Branch 35
- Change Directory 36
- Entering Telephone Numbers 36
- Status Branch 37
- Identity 38
- 494-14855 39
- Local Digital Loop 40
- Remote Digital Loop 40
- Configure Branch 41
- Configure 42
- DTE Interface 44
- Table 3-4 45
- (1 of 6) 45
- (2 of 6) 46
- (3 of 6) 47
- (4 of 6) 48
- (5 of 6) 49
- (6 of 6) 50
- DTE Dialer 51
- Table 3-5 52
- Line Dialer 56
- Table 3-6 57
- (2 of 4) 57
- (3 of 4) 58
- (4 of 4) 59
- Dial Line 60
- Table 3-7 61
- Leased Line 63
- Table 3-8 64
- V.42/MNP/Buffer 65
- Table 3-9 66
- Table 3-11 72
- Control Branch 73
- Clone To Remote 74
- To Local via DTE 74
- Remote Branch 75
- This page intentionally left 76
- AT Commands and S-Registers 77
- Command Guidelines 78
- AT Command List 78
- ATDT9,5551234 79
- Table 4-1 80
- (2 of 13) 80
- AT Commands 80
- (3 of 13) 81
- (4 of 13) 82
- (5 of 13) 83
- (6 of 13) 84
- D D 85
- (9 of 13) 87
- (10 of 13) 88
- (11 of 13) 89
- (12 of 13) 90
- (13 of 13) 91
- S-Register List 92
- (2 of 10) 93
- (3 of 10) 94
- (4 of 10) 95
- (5 of 10) 96
- (6 of 10) 97
- (7 of 10) 98
- (8 of 10) 99
- Table 4-2 100
- (9 of 10) 100
- S-Registers 100
- (10 of 10) 101
- Recovering AT Commands 102
- Initialization Strings 103
- Fax Operation 105
- Remote Access 107
- 495-13082a-02 108
- Security 109
- Originate Security 110
- Answer Security 110
- Callback Security 111
- Security Branch 111
- EditPassWdTable 112
- Select Index 112
- Table 7-1 113
- (2 of 2) 113
- Set Answer Sec 114
- Set Orig Secur 115
- Set CallBack Sec 115
- " Procedure 116
- Security Configuration 117
- Table 7-5 118
- (2 of 3) 118
- (3 of 3) 119
- SDCP Menu Tree 121
- 98-14848-01 122
- 98-14849-01 123
- 495-14850 124
- Result Codes 125
- Table B-1 126
- Troubleshooting 129
- Table C-5 131
- (1 of 2) 131
- Modem – VF Connection 131
- Automatic Firmware 133
- Download 133
- Technical Specifications 135
- Table D-1 136
- Model 3821 136
- Technical Specifications 136
- Specifications Description 136
- Pin Assignments 137
- JM8 to RJ11 Crossover Cable 138
- NIM Cable Pin Assignments 139
- Overview 141
- Call Request Commands 142
- Call Response 142
- Call Connecting (CNX) 143
- Incoming Call (INC) 143
- Disregard Incoming Call (DIC) 143
- Connect Incoming Call (CIC) 143
- Command Response 144
- Equipment List 147
- Configuration Options by 149
- Country Code 149
- Table H-1 150
- (1 of 5) 150
- (2 of 5) 151
- (3 of 5) 152
- (4 of 5) 153
- (5 of 5) 154
- Table H-2 155
- Glossary 161
- Glossary 163
- 00282600 175
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