User guide

Developers guidelines | AT commands
47 June 2010
ATX Call progress monitoring control
RING 2 The DCE has detected an
incoming call from the
network
NO CARRIER 3 The connection has been
terminated or the attempt to
establish a connection failed
ERROR 4 Command not recognised,
command line maximum
length exceeded, parameter
value invalid or other problem
with processing the
command line
NO DIALTONE 6 No dial tone detected.
BUSY 7 Engaged (busy) signal
detected
NO ANSWER 8 “@” (Wait for Quiet Answer)
dial modifier was used, but
remote ringing followed by
five seconds of silence was
not detected before
expiration of the connection
timer, S7
Description: Defines the format of the CONNECT message and if the BUSY and NO
DIALTONE result codes will be used during a data call setup.
Not applicable for voice calls.
Set command: ATX=[<n>] or ATX[<n>]
Read command: ATX? Displays the current <n> setting.
X:<n>
Test command: ATX=? Shows if the command is supported.
Test command
response: X: (list of supported <n>s)
Parameter:
<n>:
<n> Description
0 Neither BUSY nor NO DIALTONE result code is
given. No line speed reported together with
CONNECT result code
1 As for <n>=0, but reports line speed together with
CONNECT result code
2 BUSY result code is not given. NO DIALTONE result
code returned if no network. Reports line speed
together with CONNECT result code
Result code (ATV1) Result code (ATV0) Description