Bit | Signal |
|
|
3 | RING |
|
|
4 | DTMF Detection |
|
|
5 | Receive Buffer Overrun |
|
|
6 | Fax Calling |
|
|
7 | Data Calling |
|
|
8 |
|
|
|
9 | Presumed |
|
|
10 | Presumed |
|
|
11 |
|
|
|
12 |
|
|
|
13 |
|
|
|
14 |
|
|
|
15 |
|
|
|
16 |
|
|
|
17 |
|
|
|
18 | Ring Back |
|
|
19 | BUSY |
|
|
20 | DIALTONE |
|
|
21 |
|
|
|
22 |
|
|
|
23 | Playback Buffer Underrun |
|
|
24 |
|
|
|
25 | Fax or Data Answering Modem Detected |
|
|
26 |
|
|
|
27 | Voice Detected |
|
|
28 |
|
|
|
29 |
|
|
|
30 |
|
|
|
31 |
|
|
|
32 |
|
|
|
39