Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 24 23.06.2010
If the remote station does not answer
NO ANSWER
If connection successful and non-voice call.
CONNECT<text> TA switches to data mode.
Note: <text> output only if ATX<value> parameter setting with the
<value> >0
When TA returns to Command mode after call release
OK
If successfully connected and voice call
OK
Reference
V.25ter
Note
z See ATX Command for setting result code and call monitoring
parameters.
z Return the numbers and symbols which ATD supports if there is no
last dialing context.
2.2.7 ATE Set Command Echo Mode
ATE Set Command Echo Mode
Response
This setting determines whether or not the TA echoes characters received
from TE during Command state.
OK
Execution
Command
ATE<value>
Parameter
<value> 0 Echo mode off
1 Echo mode on
Reference
V.25ter
Note
2.2.8 ATH Hang Up A Call
ATH Hang Up A Call
Execution
Command
ATH[n]
Response
Disconnect existing call by local TE from Command line and terminate call
OK
Note: OK is issued after circuit 109(DCD) is turned off, if it was previously
on.