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SIM800 Series_AT Command Manual_V1.09

177

2015-08-03

+ECHO: (0,1),(0-65535),(0-65535),(0-65535),(0-65535),(0,1)

AT+ECHO=?

Parameters

See Write Command

Response

+ECHO: (<mic0>,<nlp0>, <aec0>,<nr0>, <ns0>),(<micn>,<nlpn>,

<aecn>,<nrn>, <nsn>)

Read Command

AT+ECHO?

Parameters

See Write Command

Response

If error is related to ME functionality:

+CME ERROR: <err>

Write Command

AT+ECHO=<mi

c>,<nlp>,<aec>,<

nr>,<ns>[,<state

Parameters

<mic>

Audio channel

0 Main audio handset channel

1 Main audio handfree channel

<nlp>

Nonlinear processing remove residual echo and background

noise

<aec>

Acoustic echo cancellation

<nr>

Noise reduction

<ns>

Noise suppression

<state>

Enable or disable to close echo algorithm

0 Echo algorithm be closed

1 Echo algorithm be actived

Parameter Saving

Mode

AUTO_SAVE

Max

Response

Time

Reference

Note

For this command, please refer to actual model.

The default state the echo echo algorithm be actived, and the read command

is not displayed.

6.2.43 AT+CAAS

Control Auto Audio Switch

AT+CAAS

Control Auto Audio Switch

Test Command

AT+CAAS=?

Response

+CAAS: (0-2)

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