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Chapter 6 – Voice Commands
SocketModem Global MT5634SMI Developer’s Guide 60
Voice Mode Shielded Codes
These codes can be sent in either Command mode or Data mode. The DCE may return the event detection
reports after the OK result code from the +FCLASS command. One or more simple event detection reports may
be embedded within the data portion of a complex event detection report. Table 3 describes voice mode shielded
codes. The number in the first column is the ASCII equivalent (in hex). Voice Mode Shielded Codes Detail
Shielded Code Hex
Event Report Description
<DLE> (10) Two contiguous <DLE><DLE> codes indicate a single <DLE> in the data stream.
<SUB> (1A) <DLE><DLE> in the data stream.
<ETX> (3) End Data State; signifies the end of voice data. Can end with Event 9 (Presumed Hang
Up Timeout), Event 10 (Presumed End of Message), Event 13 (Loop Current
Interruption), Event 14 (Loop Current Polarity Reversal), Event 19 (BUSY), or Event 20
(DIALTONE).
Q (51) Data stream shielded Xon character. Used in the +VXT command to shield XON
characters in the full-duplex data stream and in the Packet Protocol. (The +VXT
command is not supported by the MT5634SMI-ITP.)
S (53) Data stream shielded Xoff character. Used in the +VXT command to shield XOFF
characters in the full-duplex data stream and in the Packet Protocol.
M (4D) Data stream shielded SOH code used for the Packet Protocol.
W (57) Data stream shielded ETB code used for the Packet Protocol.
F (46) Data stream shielded ACK code used for the Packet Protocol.
U (55) Data stream shielded NAK code used for the Packet Protocol.
G (47) Data stream shielded ENQ code used for the Packet Protocol.
T (54) Timing Mark.
X (58) Packet Header for the "Complex Event Detection Report" (additional event data
transfers to the DTE).
. (2E) Packet Terminator for the "Complex Event Detection Report" (additional event data
transfers to the DTE).
/ (2F) Start of DTMF tone shielding.
~ (7F) DTMF transitions to off.
R (52) Event Number 3 (RING). The <DLE> shielded version of the RING result code.
1 (31) Event Number 4 (DTMF 1).
2 (32) Event Number 4 (DTMF 2).
3 (33) Event Number 4 (DTMF 3).
4 (34) Event Number 4 (DTMF 4).
5 (35) Event Number 4 (DTMF 5).
6 (36) Event Number 4 (DTMF 6).
7 (37) Event Number 4 (DTMF 7).
8 (38) Event Number 4 (DTMF 8).
9 (39) Event Number 4 (DTMF 9).
0 (30) Event Number 4 (DTMF 0).
A (41) Event Number 4 (Extended Keypad DTMF A).
B (42) Event Number 4 (Extended Keypad DTMF B).
C (43) Event Number 4 (Extended Keypad DTMF C).
D (44) Event Number 4 (Extended Keypad DTMF D).
* (2A) Event Number 4 (Extended Keypad DTMF E).
# (23) Event Number 4 (Extended Keypad DTMF E).
o (6F) Event Number 5 (Receive Buffer Overrun).
c (63) Event Number 6 (Facsimile Calling).
e (65) Event Number 7 (Data Calling).
h (68) Event Number 8 (line current break). Local phone goes on hook.
H (48) Event Number 8 (line current detected). Local phone goes off hook.
s (73) Event Number 9 (Presumed Hang Up "
SILENCE" Timeout).
q (71) Event Number 10 (Presumed End of Message "QUIET" Timeout).
J (4A) Event Number 11 (SIT Tone).
$ (24) Event Number 12 (Bong Tone).
I (6C) Event Number 13 (Loop Current Interruption). Usually indicates a remote hang up.
L (4C) Event Number 14 (Loop Current Polarity Reversal). May indicate a hang up or a
receive, depending on CO implementation.
w (77) Event Number 15 (Call Waiting/Beep Interrupt).
t (74) Event Number 17 (TDD Detected - 1400/1800).
r (72) Event Number 18 (Ring Back).
b (62) Event Number 19 (BUSY). May be repeatedly sent.