https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=Category%3ASIMCOM_GSM_AT
Category:SIMCOM GSM AT - Revision history
2026-07-24T01:41:30Z
Revision history for this page on the wiki
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https://w.electrodragon.com/w/index.php?title=Category:SIMCOM_GSM_AT&diff=26759&oldid=prev
Chao at 14:35, 1 June 2020
2020-06-01T14:35:45Z
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<p><b>New page</b></p><div>Template<br />
* Make sure network register, net led blink every 3 seconds<br />
{| class="wikitable sortable"<br />
|-<br />
! Excute !! Feedback !! Read !! Feedback !! Write !! Feedback !! Test !! Feedback !! Description<br />
|-<br />
| - ||- || - || - || ATD+number; "ATD18576608994;" || OK || - || - || don't forget the ";" after AT commands<br />
|-<br />
| ATA ||OK || - || - || - || - || - || - || answer the incoming phone call<br />
|-<br />
| ATH or AT+CHUP ||OK || - || - || - || - || - || - || hang off the phone call<br />
|-<br />
| AT+COLP || +COLP:"10086",129,"","" || - || - || - || - || - || - || show up the calling number<br />
|-<br />
| AT+CLIP (AT+CLIP=1) || +CLIP:"15124532672",161,"",,"ailin",0， || - || - || - || - || - || - || Enable calling number display<br />
|-<br />
| AT+CSDVC ||- || - || - || - || - || - || - || 1 = microphone output, 3 = speaker output<br />
|-<br />
| - ||- || AT+CLVL=? || +CLVL: (0-5) //The volume is 0~5 adjustable || Set volume to 2: AT+CLVL=2 || - || - || - || Check volume range<br />
|-<br />
| - ||- || - || - || - || - || - || - || -<br />
|-<br />
| - ||- || - || - || - || - || - || - || -<br />
<br />
|}<br />
<br />
<br />
== DTMF ==<br />
* AT+CLDTMF=2,"1,2,3,4,5"<br />
* AT+VTS=1 send DTMF voice, this is send "1" tone<br />
{| class="wikitable sortable"<br />
|-<br />
! Excute !! Feedback !! Read !! Feedback !! Write !! Feedback !! Test !! Feedback !! Description<br />
|-<br />
| - || - || - || - || AT+VTS=* || - || - || - || <br />
* send DTMF audio. <br />
* for example, when we call the service provider number and need the press number 1 for operation, you can do AT+VTS=1<br />
|}<br />
<br />
== Phone Number Book ==<br />
<br />
* List avaialble number book: AT+CPBS=?<br />
* Choose sim book: AT+CPBS="SM"<br />
* List number book range: AT+CPBR=?<br />
* list number book contents: AT+CPBR=1,10<br />
* write a contact into number book -> AT+CPBW="13800138000",,"China mobile"<br />
* check if avaialble by: AT+CPBF="China mobile"<br />
* Delete -> AT+CPBW=2<br />
<br />
<br />
Audio parameter debugging<br />
* AT+CACDBFN=?<br />
* +CACDBFN: (Handset_cal.acdb,Handset_tianmai.acdb) // It is recommended to consider setting this parameter<br />
* OK<br />
A. The module is powered on during the initialization phase. Before making a call, add the following<br />
* AT^PWRCTL=0,1,3 // Mainly improve TDD noise effect<br />
* OK<br />
B. Module establishes a voice call<br />
* VOICE CALL: BEGIN // Module call setup is performed to improve call performance<br />
* AT+CECM=1 //Echo suppression processing<br />
* OK<br />
* AT+CECH=0x500 //Improve the volume effect of the mobile phone<br />
* OK<br />
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[[category: SIMCOM AT]]<br />
<br />
[[category: GSM ]]</div>
Chao