AT Command Set for WCDMA Module - wless.ru
AT Command Set for WCDMA Module - wless.ru
AT Command Set for WCDMA Module - wless.ru
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<strong>WCDMA</strong> <strong>Module</strong><br />
7: voice call + data service + fax service<br />
8: SMS<br />
16: circuit domain data SYNC<br />
32: circuit domain data ASYN<br />
64: exclusive packet access<br />
128: exclusive PAD access<br />
255: all types<br />
<br />
0: disabled<br />
1: enabled<br />
2.2.24 +CHLD: call held and conference call<br />
Description<br />
Format<br />
This command is used to set call held and conference call.<br />
<strong>AT</strong>+CHLD=<br />
Example<br />
Parameters<br />
<strong>AT</strong>+CHLD=0<br />
OK<br />
<strong>AT</strong>+CHLD=?<br />
+CHLD(0,1,1x,2,2x,3,4)<br />
OK<br />
:0,1,1X,2,2X,3,4<br />
<strong>Set</strong> “release all held calls”<br />
Check the supported <br />
0: release all held calls or set a waiting call as UDUB<br />
1: Release all activated calls and receive a held or waiting call.<br />
1X: Release call X<br />
2: Hold all activated calls and receive another held or waiting call.<br />
2X: hold all calls except <strong>for</strong> call X<br />
3: Add the held call into the conference call<br />
4: Connect two calls or hang up two calls<br />
Remarks:<br />
1. This command is used <strong>for</strong> telecom service;<br />
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