|
| |
Wait for and return a DTMF character
| Func AX |
08h |
| Param DX |
Seconds to wait for tone, can be zero
|
| Return AX |
An ASCII character '0'-'9'
or '*','#','A','B','C','D' or -1 if no DTMF detected |
| Delay |
From zero or until the tone completes
|
Wait for and return a DTMF (touchtone) character. The ASCII
value of the received touchtone is returned. If a DTMF terminates
a RECORD or PLAY, it is returned when this function is called.
A timeout can be passed as a parameter to set the number of
seconds to wait for the reception of a touchtone. |