ZyXEL Communications U-336E User Manual page 11

S-Register Descriptions 84
Basic S-Registers "ATSn=x" 84
Extended S-Registers "ATSn=x" 85
Result Code Options 102
"ATXn" Result Code Option Table 102
Result Code Field Descriptions 105
Connect Strings for Error Corrected Connections 105
9 Diagnostics & Troubleshooting 107
Diagnostics 107
Power-On Self Test 107
Resetting The Modem 108
Loopback Tests 109
Indicator Lights 110
Line Condition Status Display 111
Trouble Shooting 113
AT Command Set Problems 113
Command Echo Problems 115
Answer Problems 115
Dialing Problems 116
Data Transfer Problems 117
Connection Problems 117
10 Upgrading Your Modem 118
Upgrading by Flash EPROM 118
Kernel Recovery Mode 119
11 Connector Pinouts 120
Phone Jack Pinouts 120
PC Serial Port Pinouts 120
Macintosh Serial Port Pinouts 122
xi