Voice call using GSM 5210

toanhoi bui

Hello ,everybody.I am writting a application to voice call to Mobile using GSM 5210.But I don't know AT command to do it. I try to send byte array to Com port but I think mobile will does not encode this byte array.Can you help me,please

3 Replies

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Sam Hobbs15y ago
I assume that when you say AT command you mean the kind of commands used for old-style modems that is still used for modems. I think the commands were originally designed by Hayes. If so the the command to dial a number would be ATDT followed by the number in ASCII digits. No binary! Every command must be followed by a new line; I forget whether a newline is a CRLF or just a CR. Does that sound like what you are looking for? It definitely should be easy to find documentation of the commands.

Also Windows has a Telephony API (TAPI) that would take care of sending the commands; look for that.
toanhoi bui15y ago
thanhs.But this links supports send SMS ,is not supports voice call
15y ago
I guess it will support the AT commands. Please check the below links.

http://www.traud.de/gsm/atex.htm
http://www.developershome.com/sms/howToUseHyperTerminal.asp
http://www.sourcecodester.com/visual-basic/sending-sms-using-commands-gsm-modemgsm-phone-receiving-sms-updated.html
http://www.activexperts.com/activcomport/at/