Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 24 12/24/2010
This setting determines whether or not the TA echoes characters received
from TE during Command state.
OK
Command
ATE<value>
Parameter
<value> 0 Echo mode off
1 Echo mode on
Reference
V.25ter
Note
2.2.8 ATH Disconnect Existing Connection
ATH Disconnect Existing Connection
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.
Execution
Command
ATH[n]
Parameter
<n> 0 Disconnect ALL calls on the channel the command is
requested. All active or waiting calls, CS data calls, GPRS call
of the channel will be disconnected.
1 Disconnect all calls on ALL connected channels. All active or
waiting calls, CSD calls, GPRS call will be disconnected.
(clean up of all calls of the ME)
2 Disconnect all connected CS data call only on the channel
the command is requested. (speech calls (active or waiting)
or GPRS calls are not disconnected)
3 Disconnect all connected GPRS calls only on the channel
the command is requested (speech calls (active or waiting)
or CS data calls are not disconnected.
4 Disconnect all CS calls (either speech or data) but does not
disconnect waiting call (either speech or data) on the
channel the command is requested.
5 Disconnect waiting call (either speech or data) but does not
disconnect other active calls (either CS speech, CS data or
GPRS) on the channel the command is requested.
(rejection of incoming call)
Reference
V.25ter
Note