XE3301F Ver la hoja de datos (PDF) - Xecom
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XE3301F Datasheet PDF : 19 Pages
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XE3301 AT Commands (continued)
Escape Characters - A three character escape
sequence, entered while in data mode, will switch
the modem into command mode while remaining
on line. The escape character, set by Register S2,
is entered 3 times in succession to execute the
escape. The default escape sequence is "+++."
Result Codes - The modem issues a result code
after each action. Result codes may be provided
as full words, numeric codes or may be disabled.
Each result code ends with a carriage return when
numeric result codes are chosen. When full word
result codes are chosen, a Line Feed and Carriage
Return precede and follow each result code.
List of Commands
An asterisk indicates the default setting of the
command for the XE3301. The default setting may
be different for the European models.
En - Command Echo - ATEn determines whether
commands will be echoed back to the host.
n=0 Do not echo commands
n=1 Enable command echo*
Hn - Switch Hook Control - ATHn opens and
closes the modem's hook switch.
n=0 Switch hook relay opens
n=1 The switch hook relay closes
In - Modem Identification - ATIn Identifies the
version of the modem.
Ln - Speaker Volume - ATLn sets the amplitude
of the modem's audio output.
n=0 Lowest speaker volume
n=1 Low speaker volume*
n=2 Moderate speaker volume
n=3 High speaker volume
A - Answer Command - ATA forces the modem
to immediatly go off-hook and begin transmittting
the answer tone sequence.
Bn - Select Communications Standard - ATBn
selects the modulation scheme used for
connections below 2400 bits per second
n=0 Selects CCITT standards
n=1 Selects Bell standards*
D - Dial Command - Below are the characters
accepted in a dialing command.
0-9, #, * = Dialing Digits
L = Re-dial last number
P = Pulse dial
T = Tone dial
S=n = Dial stored number
W = Wait for dial tone
^ = Toggles state of calling tone
, = Pause for the duration of S8
@ = Wait for silence
! = Switch hook flash
; = Return to the command state
Mn - Speaker Activity - ATMn determines when
the modem's audio output is active.
n=0 Speaker off
n=1 Speaker on until carrier received*
n=2 Speaker remains on
n=3 Speaker off during dialing, on until carrier
Nn - Data Rate - ATNn selects whether or not
the modem will negotiate a lower data link speed.
n=0 Handshake only at DTE rate
n=1 Negotiate highest common speed*
On - On Line - ATOn switches the modem from
the command mode to the data mode.
n=0 Return On Line with no retrain*
n=1 Initiate retrain returning On Line.
Qn - Responses - ATQn determines if the
modem will issue responses.
n=0 Send responses*
n=1 No Responses
Sr? - Interrogate Register - ATSr? requests the
current value in register Sr.
XECOM
(7)
XE3301
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