andrewzhang
Programmer
Hi,
I'm trying to detect busy tone after i use "atdtxxxxxxxxx;", because after dial that phone number, i need to dial more extention numbers.
I always get the "OK" message, not "BUSY" message from modem buffer.
By the way, i use Mscomm control and the modem is a voice modem(AOPEN).
I also try to use "ATDTXXXXXXXXX", in this way , i could detect the busy tone, but i can't return to command mode because i need to dial more extention numbers, i try to use "+++"(no crlf), but it is not working.
I also try to change to voice mode by "at+fclass=8" and "atvtx", but there is same problem.
I realy need some help
Thanks .
I'm trying to detect busy tone after i use "atdtxxxxxxxxx;", because after dial that phone number, i need to dial more extention numbers.
I always get the "OK" message, not "BUSY" message from modem buffer.
By the way, i use Mscomm control and the modem is a voice modem(AOPEN).
I also try to use "ATDTXXXXXXXXX", in this way , i could detect the busy tone, but i can't return to command mode because i need to dial more extention numbers, i try to use "+++"(no crlf), but it is not working.
I also try to change to voice mode by "at+fclass=8" and "atvtx", but there is same problem.
I realy need some help
Thanks .