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this SIM5218 AT command manual - Cooking Hacks

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<strong>SIM5218</strong> Serial <strong>AT</strong> Command Set<br />

8.11 <strong>AT</strong>+CECM Enable/Disable Echo Canceller<br />

Description<br />

This <strong>command</strong> is used to select the echo cancellation mode. Each audio channel has it’s own<br />

default echo cancellation mode. For example:<br />

Handset: at+cecm=1(default open)<br />

Headset: at+cecm=2(default open)<br />

Speaker: at+cecm=4(default open)<br />

PCM: at+cecm=5(default open)<br />

SIM PIN<br />

NO<br />

References<br />

Vendor<br />

Syntax<br />

Test Command<br />

Responses<br />

<strong>AT</strong>+CECM= +CECM: (0-8)<br />

OK<br />

Read Command<br />

<strong>AT</strong>+CECM<br />

Write Command<br />

<strong>AT</strong>+CECM=<br />

Responses<br />

+CECM: <br />

OK<br />

Responses<br />

OK<br />

ERROR<br />

Defined values<br />

< enable >:<br />

0 : disable EC mode<br />

1 : EC mode recommended for HANDSET<br />

2 : EC mode recommended for HEADSET<br />

3 : EC mode recommended for HANDSFREE<br />

4 : EC mode recommended for SPEAKER<br />

5 : EC mode recommended for BT HEADSET<br />

6 : EC mode for dynamic adjustion<br />

7 : EC mode for dynamic adjustion<br />

8 : EC mode for dynamic adjustion<br />

Examples<br />

<strong>AT</strong>+CECM=0<br />

<strong>SIM5218</strong>_Serial _<strong>AT</strong>C_V1.36 142<br />

5/15/2012

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