Chapter 4 – Voice Commands
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306C)
106
Table 4-6. Events Detectable in the Voice Mode per V.253
Event Number Event Description
Event Reporting
0
Caller Id Report
Message
1
DID Report
Message
2
Distinctive Ringing
Pattern
3
RING Simple
4
DTMF Received
Simple
5
Receive Buffer Overrun
Simple
6
Facsimile Calling (e.g., 1100 Hz)
Simple
7
Data Calling (e.g., 1300 Hz)
Simple
8
Local Phone On/Off-hook
Simple
9
Presumed Hangup (SILENCE) Time-out
Simple
10
Presumed End of Message (QUIET) Time-out
Simple
11
SIT Signal
Simple, Message
12
Bong Tone
Simple
13
Loop Current Interruption
Simple
14
Loop Current Polarity Reversal
Simple
15
Call Waiting Beep/Interrupt
Simple
16
Distinctive Call Waiting
Simple
18
Ringing Tone
Simple
19
BUSY Simple
20
DIAL TONE
Simple
21
Reorder/Fast Busy
Simple
22
V.21 Channel 2 7E flags
Simple
23
Transmit Buffer Underrun
Simple
24
Extension Phone On/Off-hook
Simple
25
Facsimile or Data Answer (e.g., 2100 Hz)
Simple
26
Data Answer (e.g., 2225 Hz)
Simple
27
Voice Detect
Simple
29
Stuttered Dial tone
Simple (note 1)
30
Invalid Voice Data Format
Simple
31
Lost Data Detected Event
Simple
32
Facsimile Answer
Simple
Legend:
This table lists events without any regard as to whether the DCE reporting of the event is
optional or mandatory, and without assigning a DCE reporting mechanism.
The first column lists the event number assignment for each event. The event number also
serves another purpose; each number is a bit position in a bit field. Event number 0 is the
most significant bit of the left most hex number in a hex representation (V.253 defines a
total of eight hex digits). The final bit in the bit field occupies the least significant bit position
of the right-most hex number. The bit representations of the event numbers are used in the
+VLS= command.
The third column lists whether a single character is enough to report the event, or if the
DCE must supply a more complicated report. The description Simple indicates a single
character response (<DLE> shielded), Message indicates a full text message (<DLE><X>
packet), and Pattern indicates a repeating Message.
Notes:
1. The use of complex event reporting for Stuttered Dial tone is for further study.