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Chapter 10 - Voice Mode Operation
10-9
<code> Event Report Description
7 (0x37) DTMF 7
8 (0x38) DTMF 8
9 (0x39) DTMF 9
0 (0x30) DTMF 0
A (0x41) Extended Keypad DTMF A
B (0x42) Extended Keypad DTMF B
C (0x43) Extended Keypad DTMF C
D (0x44) Extended Keypad DTMF D
* (0x2A) Extended Keypad DTMF *
# (0x23) Extended Keypad DTMF #
o (0x6F) Buffer Overrun.
c (0x63) T.30 fax calling tone (1100Hz). The time interval between
reports is 4.0 seconds.
e (0x65) Data modem calling tone (1300Hz). The time interval between
report is 4.0 seconds.
h (0x68) Line current break (local phone goes on-hook).
H (0x48) Line current detected (local phone goes off-hook).
s (0x73) Silence detected. The DCE has determined that there was no
voice energy present at the beginning of the voice receiving
session followed by a period of silence greater than the amount of
time selected by the +VSD command.
q (0x71) Quiet detected. The DCE has determined that there was voice
energy present at the beginning of the voice receiving session
followed by a period of silence greater than the amount of time
selected by the +VSD command.
$ (0x24) Bong Tone (300Hz for 1 second).
l (0x6C) Loop current interruption. This may be a remote hang-up.
b (0x62) BUSY. If the DCE continues to detect BUSY , it may report
this event repeatedly. The delay between reports is 4.0 seconds.
u (0x75) Transmission Buffer Underrun. The DCE will report this code if
the DCE's buffer becomes empty without first receiving a
<DLE><ETX> or a <DLE><CAN> command.
a (0x61) Data answer tone. The delay between reports is 4.0 seconds.
Action Commands in Voice Data State
The DTE may initiate actions by inserting a <DLE> shielded code into the data to
the DCE. The form of the action is <DLE><code>, where <code> is one of the
character values listed in the following table:
<code> Event Report Description
<NUL> (0x0) Does nothing. The DTE can use the code to refresh the
DTE/DCE Inactivity Timer, instead of XON.
<DLE> (0x10) Two contiguous <DLE><DLE> codes indicate a single <DLE> is
in the data stream.
<SUB> (0x1A) <DLE><DLE> in the data stream.