XE3314B Datasheet, PDF (7/17 Pages) List of Unclassifed Manufacturers – Low-Cost, Embeddable 33,600 BPS Modem Module

XE3314B AT Commands (continued)
List of Commands
An asterisk indicates the default setting of the command for the
XE3314B. The default setting may be different for the
European models.
A - Answer Command - ATA forces the modem to immedi-
ately go off-hook and begin transmitting the answer tone se-
quence.
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
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
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 com-
mand 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.
Sr=n - Set Register Value - ATsr=n sets the value of register
Sr to n.
Vn - Result Codes - ATVn sets the modem to issue Numeric
or Full Word result codes .
n=0 Numeric Result Codes
n=1 English Word Result Codes*
Wn - Connect Message Rate - ATWn determines whether
the data rate reported in the Connect response is the host data
rate, the link data rate or whether both are provide along with
the error control and data compression protocols negotiated.
n=0 Send "CONNECT" at DTE Rate*
n=1 Report line speed, DTE speed and Link protocol
n=2 "CONNECT" Reports Link speed
Xn - Result Code Set - ATXn selects which set of result
codes the modem may send.
n=0 Result codes 0 to 4
n=1 Result codes 0 to 5 and 10
n=2 Result codes 0 to 6 and 10
n=3 Result codes 0 to 5, 7 and 10
n=4 Full Result codes*
XECOM
(7)
XE3314B