Table of Contents
Advertisement
Command
Options Function & Description
M3
O0
O1
Q n
Q0 *
Q1
Q2
Sr= n
Sr?
T
V n
V0
V1 *
X n
n=0-7
5 *
Z n
n=0-1
n=2
$ or ?
&$ or &?
*$ or *?
Extended AT& Command Set
Command
Options Function & Description
&Cn
&C0
&C1 *
&Dn
&D0
&D1
&D2 *
&D3
&F
&Gn
&G0 *
&G2
&Hn
&H0
&H3 *
&H4
&H5
&H6
Speaker ON until CD is detected
Return to on-line state
Return to on-line state with forced retrain
Result code displayed
Modem returns result code
Modem does not return result code
Modem returns result code but quiet after answering on a
RING.
Set S-register 'r' to value 'n'. 'n' must be a decimal
number between 0 and 255
Display value stored in S-register 'r'
Ton dial
Sets display type for Result Codes
Display result code in numeric form. (See the result code
table of 'ATXn')
Display result code in verbose form.
Result code options, see the Options Table
Reset modem and set power-on profile n.
Reset modem and load factory settings.
Basic command summary help
Extended 'AT&' command summary help
Extended 'AT*' command summary help
Carrier Detect (CD) options
CD always ON
CD tracks presence of carrier
Data Terminal Ready (DTR) options
Ignore DTR signal, assume DTR is always ON.
108.1, DTR OFF-ON transition causes dial of the default
number.
108.2, Data Terminal Ready, DTR OFF causes the
modem to hang up.
Same as &D2 but DTR OFF causes the modem to hang
up and reset from profile 0.
Load factory settings to RAM as active configuration.
Guard tone options
No guard tone (within USA, Canada).
1800 Hz guard tone.
Data flow control, DTE/DCE.
Flow control disabled.
Hardware (CTS/RTS) flow control
Software (XON/XOFF) flow control.
Transparent XON/XOFF
Both RTS/CTS and XON/XOFF flow control.
Ref.
Ref.
AT Command Set Summaries 31
Advertisement
Table of Contents
