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Table D: Bit Positions of Supported Events
Bit
Event
0
Caller ID
2
Distinctive Ring
3
RING
4
DTMF Detection
5
Receive Buffer Overrun
6
Fax Calling (1100 Hz.)
7
Data Calling (1300 Hz.)
9
Presumed Hang-Up (SILENCE) Time-out
10
Presumed End-of-Message (QUIET) Time-out
18
RINGBACK
19
BUSY
20
DIALTONE
23
Playback Buffer Underrun
25
Fax or Data Answering Modem detected
27
Voice Detected
Table E: Parameter Types for AT+VTS
Type
Meaning
D
D = DTMF tone for default duration
{D,d}
D=DTMF tone, d=duration
[F1,F2,d]
F1=Frequency 1, F2=Frequency 2, d=duration
Note: Any number of parameters can occur on a single line, separated by commas.
If no DTMF tone or Frequency is given, then silence is generated for the given duration.