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.

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

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