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Chapter 3 – AT Commands, S-Registers, and Results Codes
Multi-Tech Systems, Inc. MT2834ZDX User's Guide 19
Result Codes
In command mode the MT2834ZDX can send responses, or result codes, to your computer. Result codes are used
by communications programs and can also appear on your monitor.
AT&Q0 selects Multi-Tech result codes with RELIABLE, LAPM, and COMPRESSED modifiers (default).
AT&Q1 selects standard AT result codes without modifiers.
&Q0 Multi-Tech Result Codes &Q1 Standard Result Codes Description
Terse Verbose Terse Verbose
0 OK 0 OK Command executed without error
1 CONNECT 1 CONNECT Modem has detected carrier and gone online
2 RING 2 RING Modem has detected ring from incoming call
3 NO CARRIER 3 NO CARRIER No carrier has been signal detected within
allowed time
4 ERROR 4 ERROR Error in command line (too many
characters or invalid characters
5 * CONNECT 1200 5 CONNECT 1200 Modem has detected carrier at 2400bps
and gone online
6 NO DIALTONE 6 NO DIALTONE No dial tone detected
7 BUSY 7 BUSY A busy signal detected
8 NO ANSWER 8 NO ANSWER Remote system did not answer
9 CONNECT 2400 Modem had detected carrier at 2400 bps
and gone online
10 CONNECT 2400 Modem had detected carrier at 2400 bps
and gone online
11 * CONNECT 4800 11 CONNECT 4800 Modem had detected carrier at 4800 bps
and gone online
12 * CONNECT 9600 12 CONNECT 9600 Modem had detected carrier at 9600 bps
and gone online
13 CONNECT 12000 13 CONNECT 12000 Modem had detected carrier at 12000 bps
and gone online
13 * CONNECT 14400 13 CONNECT 14400 Modem had detected carrier at 14400 bps
and gone online
16 CONNECT 16800 16 CONNECT 16800 Modem had detected carrier at 16800 bps
and gone online
19 * CONNECT 19200 19 CONNECT 19200 Modem had detected carrier at 19200 bps
and gone online
21 * CONNECT 21600 21 CONNECT 21600 Modem had detected carrier at 21600 bps
and gone online
24 * CONNECT 24000 24 CONNECT 24000 Modem had detected carrier at 24000 bps
and gone online
26 * CONNECT 26400 26 CONNECT 26400 Modem had detected carrier at 26400 bps
and gone online
28 * CONNECT 28800 28 CONNECT 28800 Modem had detected carrier at 28800 bps
and gone online
31 * CONNECT 31200 31 CONNECT 31200 Modem had detected carrier at 31200 bps
and gone online
33 * CONNECT 33600 32 CONNECT 33600 Modem had detected carrier at 33600 bps
and gone online
*With error correction on, RELIABLE (or R) or LAPM (or L) is added to these result codes. With data compression on,
COMPRESSED (or C) is added.