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How can i detect busy tone after i use "ATDTxxxxxxxxxx;"?
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...- andrewzhang
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- Replies: 7
- Forum: Modem
