6/9/2023 0 Comments Simcom series download tool![]() I need to build up a contact-ID protocol time line but without setting the tone duration it is impossible. ![]() When I try AT+VTS=1″,100 AT+VTS=”1″,100 I get ERROR Having the same problem with AT+CLDTMF command, duration cannot be set. Select your board type and serial port from the Tools menu,Open up. In sim900 manual 1.1 there is a parameter for duration AT+VTS=? +VTS: (0-9.,#,A,B,C,D),(1-255) OK when I try AT+VTS=”1″ I hear the tone at the remote. Download Arduino Library and unzip the ZIP file. Setting the AT+VTD command has no effect, tone duration is always the same, When I pass the duration parameter to AT+VTS I get error back. Hello Dost I have flashed my sim900 shield with rev.1137B08SIM900M64STDTMFJDMMS DTMF tones are working now but I cannot pass the parameters to set the tone duration. I need below response for my application in any network GSM Modem dial call to user then 1) if User Pick call then respnse should be “CONNECT” 2) if User disconnect call then response should be “BUSY” 3) if User not pick call then response should be “NO ANSWER” 4) if user mobile phone in switchoff mode or airplan mode then response should be “NO CARRIER”.
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