Digicom pocket GSM User Manual page 43

PocketGSM
AT+ECHO Echo cancellation
This command enables the echo cancellation for voice calls in small rooms. It could be
necessary to act on the (AT+VGT) and (AT+VGR) commands for a best voice quality.
Command
AT+ECHO=<mode>,<algold>
AT+ECHO?
<mode> Mode
0 Echo disabled
1 Echo enabled
Note: you can enable/disable the echo cancellation during a call without restarting the modem if you
don't change the Algorithm.
<algold> Algorithm
1 Echo cancellation 1
3 Echo cancellation 3
<status> Status
0 Eco disabled
1 Eco enabled for "telephone handset"
2 Eco enabled for "loud speaking telephone"
3 Module reset
AT+SIDET SideTone Control
This command is used to set the echo level of the voice in the speaker (to have a microphone
feedback in the speaker).
Command
AT+SIDET=0,<val>
AT+SIDET=1,<val>
AT+SIDET?
Possible answers
OK / ERROR
+ECHO: <status>,<algold>
Possible answers
OK / ERROR
OK / ERROR
+SIDET: 1,1
4.23
AT Commands
Action
Sets the echo cancellation
Shows the current settings
Action
SideTone disabled
SideTone enabled
Shows the current settings