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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 />

Execution Command<br />

<strong>AT</strong>+CVHU<br />

Responses<br />

Set default value:<br />

OK<br />

Defined values<br />

<br />

0 – “Drop DTR” ignored but OK response given. <strong>AT</strong>H disconnects.<br />

1 – “Drop DTR” and <strong>AT</strong>H ignored but OK response given.<br />

Examples<br />

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

OK<br />

<strong>AT</strong>+CVHU<br />

+CVHU: 0<br />

OK<br />

4.11 <strong>AT</strong>H Disconnect existing call<br />

Description<br />

The <strong>command</strong> is used to disconnect existing voice call. Before using <strong>AT</strong>H <strong>command</strong> to hang up a<br />

voice call, it must set <strong>AT</strong>+CVHU=0. Otherwise, <strong>AT</strong>H <strong>command</strong> will be ignored and “OK” response<br />

is given only.<br />

The <strong>command</strong> is also used to disconnect CSD or PS data call, and in <strong>this</strong> case it doesn’t depend on<br />

the value of <strong>AT</strong>+CVHU.<br />

SIM PIN References<br />

NO V.25ter<br />

Syntax<br />

Execution Command<br />

<strong>AT</strong>H<br />

Responses<br />

If <strong>AT</strong>+CVHU=0:<br />

VOICE CALL: END: <br />

OK<br />

OK<br />

Defined values<br />

<br />

Voice call connection time:<br />

Format – HHMMSS (HH: hour, MM: minute, SS: second)<br />

<strong>SIM5218</strong>_Serial _<strong>AT</strong>C_V1.36 50<br />

5/15/2012

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