Intel MD566X User Manual
Page 19
56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide
Intel Confidential
19
Table 2-7.
Voice DTE
←DCE Character Pairs
Response
Hex Code
Function
10
Single
1A
3
End of Record mode data
X
58
Packet header for ‘Complex Event Detection Report’
.
2E
Packet terminator for the ‘Complex Event Detection
Report’
/
2F
Start of DTMF tone shielding
7F
DTMF transition to off
0–9
30–39
DTMF tones 0–9
A–D
41–44
DTMF tones A–D
*
2A
DTMF tone *
#
23
DTMF tone #
o
6F
Receive buffer overrun
c
63
1100-Hz fax calling tone
e
65
1300-Hz data calling tone
h
68
Local phone goes on hook
H
48
Local phone goes off hook
s
73
Presumed hang-up silence time-out
q
71
Presumed end-of-message quiet time-out
I
6C
Loop current interruption
L
4C
Loop current polarity reversal
r
72
Ringback
b
62
Busy/reorder/fast busy
d
64
Dial tone detected
u
75
Transmit buffer under-run
p
70
Line voltage increase (extension phone goes on-hook)
P
50
Line voltage decrease (extension phone goes off-hook)
a
61
Fax or data answer tone (2100 Hz)
f
66
Data answer detected (2225 Hz)
R
52
Incoming ring
% ‘ (,)
25, 26, 27,
28, 29
Manufacturer-specified