ZyXEL Communications U-336R, User Manual

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8 AT Command Set Summaries 77
Basic AT Command Set 77
Description of ATI2 Output: 80
Extended AT& Command Set 83
Extended AT* Command Set 89
9 Status Registers & Result Codes 92
S-Register Descriptions 92
Basic S-Registers "ATSn=x" 92
Extended S-Registers "ATSn=x" 93
Result Code Options 111
"ATXn" Result Code Option Table 111
Result Code Field Descriptions 113
Connect Strings for Error Corrected Connections 113
10 Diagnostics & Troubleshooting 116
Diagnostics 116
Power-On Self Test 117
Loopback Tests 118
Indicator Lights 119
Line Condition Status Display 120
Link Status Report (ATI2) 122
Trouble Shooting 126
AT Command Set Problems 126
Command Echo Problems 128
Answer Problems 128
Dialing Problems 129
Data Transfer Problems 130
Connect Problems 130
11 Upgrading Your Modem 131
Upgrading by Flash EPROM 131
Kernel Recovery Mode 132