Vem Event Reporting And Masking - Multitech MultiModem SocketModem MT9234 Series At Commands Reference Manual

Reports:
Result Codes:
+VEM
Description:
Syntax:
Values:
Reports:
Result Codes:
Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H)
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DRON=8
DROF=4
DRON=8
RING
<DLE><.>
+VDR? Displays current or selected values.
+VDR=? Displays a list of the supported values.
OK if the modem accepts the command
ERROR if the parameter is out of range or not in voice mode.
Event Reporting and Masking
The +VEM= command can be used to disable an event report, regardless of the
modem's state, or of the modem's analog signal source or destination's configuration.
The <mask> parameter is a bit field where bit 0 is the most significant bit of an eight-
digit hex number. The PC setting of a bit enables event reporting for that event. Bit 0
in the bit field corresponds to Event number 0 (Caller ID). This mask effects the
reporting of the specified event in all modes (Fax, On-line data, AT Command and
Voice modes). Events cannot be masked by modes; however, the PC can change
the mask each time it changes modes. The modem-detectable events depend on the
compression method selected by the +VSM command. The +VEM command may
effect the reporting capabilities of other +V commands. The detection of an event
may not be possible at all times and for all compression methods. Use the +VLS=?
command to ask which times and for which compression methods (as well as for
which analog source/destination selections) events can be detected and reported
when not disabled by the +VEM command.
AT+VEM=<mask>
bits 0–32 on (i.e., FFFFFFFF8)
Example: In the lines below, only the RING and the DTMF event detection reporting:
AT+VEM=18000000
OK
+VEM? Displays current or selected values.
+VEM=? The +VEM=? command returns four lines of modem event
reporting/masking capability information, followed by the OK result code.
The first line indicates the Service Level supported by the modem
(though the modem may support more than the capabilities displayed).
The next three lines report the capability of the Voice Transmit mode,
Voice Receive mode, and the Voice Command mode, respectively. Each
line is a hex value that is the bit-wise OR function across all of the
supported compression methods and across all analog
source/destination hardware configurations (i.e., all +VLS settings) for
the specified mode. Note that the displayed hex values are not
connected to the <mask> parameter in the +VEM and +VEM?
commands.
OK if the modem accepts this command
ERROR if the bit field contains illegal characters.
Chapter 4 – Voice Commands
54