Motorola UbiSurf SM56 At Commands Reference Manual page 7

Table 1: AT and AT& Commands
Command Command Option Option
Command Command Option Option
X
X0
X1
X2
X3
X4
Z Z
&C
&C0
&C1
&D
&D0
&D1
&D2
&D3
&F
&G
&G0
&G1
&G2
&I
&In
Motorola Confidential Proprietary
Description Description
Description Description
Select Call-Progress Result Codes to Return
No Carrier; Connect. Modem reports lack of a carrier sig-
nal; connection success/failure; modem dials without wait-
ing for a dial tone
No Carrier; Connect; Connect <rate>. Modem reports lack
of a carrier signal; connection success/failure, and the
computer data rate established
No Carrier; Connect; Connect <rate>; No Dial Tone.
Modem reports lack of a carrier signal; connection success/
failure; the computer data rate established; and the lack of
a dial tone
No Carrier; Connect; Connect <rate>; Busy-tone. Modem
reports lack of a carrier signal; connection success/failure;
the computer data rate established; and the presence of a
busy signal
No Carrier; Connect; Connect <rate>; No Dial-tone; Busy-
tone. Modem reports lack of a carrier signal; connection
success/failure; the computer data rate established; the lack
of a dial tone; and the presence of a busy signal
Reset Modem Parameters to Default Configuration
DCD Control
Always Asserted
Asserted in Data Mode Only
DTR Control
Determines how modem responds to DTR signal from
DTE.
Ignore DTR
Enter Command mode when DTR transitions from
asserted to de-asserted
Disconnect call when DTR transitions from asserted to de-
asserted
Reset modem parameters to default configuration when
DTR transitions from asserted-to-de-asserted
Initialize modem to default factory configuration.
Guard Tone
Off
550 Hz Guard Tone
1800 Hz Guard Tone
Dial TX Level
Level n; n = 0 to 15. Default = 9
-5