xii
Operation Modes of the DTE Interface..................................112
Simplex mode ..........................................................................112
Multiplex mode........................................................................112
AT Command Descriptions .....................................................113
Basic "AT" Command Set.......................................................114
Description of ATI3 Output: ...................................................121
Extended "AT&" Command Set.............................................122
Extended "AT*" Command Set..............................................127
17 Status Registers and Result Codes..........................130
Viewing and Setting S-Registers.............................................130
Viewing S-registers..................................................................130
Setting S-registers ....................................................................131
S-Register Descriptions............................................................133
Basic S-Registers "ATSn=x"...................................................133
Extended S-Registers "ATSn=x"............................................133
"ATXn" Result Code Option Table ........................................152
Result Code Chart Symbol Reference....................................154
Result Code Field Descriptions...............................................154
Connect Strings for Error Corrected Connections.................155
18 Phone Jack Pinout Assignments..............................156
19 Serial Port Interface...................................................158
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