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Basic modem result codes
There are basic codes the modem will issue in response to processing an AT command. Result
codes may be displayed either in word (V1) or numeric (V0) format by using the Vn command.
The Qn command controls if result codes are issued (Q0) or not issued (Q1). The Xn, Wn
commands and register S95 determines which result code format the modem will display to
indicate the type of connection established. There are more than 300 codes. The most
commonly used are listed in the table below.
Numeric Verbose Description
0 OK The modemhasreceivedandacknowledgedthe command.
1 CONNECT
Connectionmadeat300bpsor extendedresultcodesareoff
(X0).
2 RING Anincomingringsignalhasbeendetected.
3 NOCARRIER
Thisresultcodereflectseither anintendeddisconnector a
failure tocompleteaconnection.
4 ERROR Aninvalidcommandwasissuedtothe modem.
5 CONNECT 1200 Indicatesa1200bpslineor DTEconnection.
6 NODIALTONE
7 BUSY Themodemhasdetectedabusytone.
8 NOANSWER After S7timehaselapsed,theremoteserver never answered.
10 CONNECT 2400 Linespeedor DTEconnectionat2400bps.
12 CONNECT 9600 Linespeedor DTEconnectionat9600bps.
15
CONNECT
14400
Linespeedor DTEconnectionat14400bps.
16
CONNECT
19200
Linespeedor DTEconnectionat19200bps.
17
CONNECT
38400
Linespeedor DTEconnectionat38400bps.
Table E.6: Basic Result Code Listing
87 Cyclades™ ACS 6000 Advanced Console Server Installation/Administration/User Guide