MT5600BA-V92-NAM Multi-Tech Systems, MT5600BA-V92-NAM Datasheet - Page 34

• Manufacturer Part Number: MT5600BA-V92-NAM
• Description: MODEM V.92 WORLD DATA/FAX LEASE
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® IIr

Specifications of MT5600BA-V92-NAM

• Data Format: V.92
• Interface: RS-232
• Voltage - Supply: 9 V ~ 12 V
• Mounting Type: Desktop
• Package / Case: 9.0" L x 6.2" W x 1.4" H (229mm x 158mm x 36mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 881-1018

Command: +VRN
Description:
Values:
Default:
Result Codes:
Report Commands:
Command: +VSD
Description:
Values:
Defaults:
Report Commands:
Command: +VSM
Description:
Values:
Defaults:
Report Commands:
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
Ringback Never Appeared Timer
This command sets the length of time the modem will wait between ringbacks during call
origination before the modem can assume that the remote station has gone off-hook.
Syntax: +VRN=<interval>
<interval>
Interval of 10 (10 seconds)
OK <interval> = 0-25
ERROR Otherwise, or if not in Voice Mode.
+VRN?
+VRN=?
Silence Detection (Quiet and Silence)
This command causes the modem to set the silence detection sensitivity and the required
period of silence before the modem reports silence detected at the end of a voice receive
either with the “Presumed End of Message” (QUIT) or “Presumed Hangup (SILENCE)
event reports.
Syntax: +VSD=<sds>,<sdi>
<sds>
<sdi>
0,50
+VSD?
+VSD=?
Compression Method Selection
This command causes the modem to set the voice compression method, the silence
compression sensitivity, and the voice sampling rate.
Syntax: +VSM=<cml><vsr><sds><sel>
<cml>
<vsr>
<sds>
<sel>
1,8000,0,0
+VSM?
+VSM=?
Decimal number specifying the time period, in units of 1.0 second, that the
modem will wait for Ringback during call origination.
A value of 0 forces the modem to report the OK result code immediately
after dialing.
The range is 1 to 25 seconds for <interval> = 1 to 25.
Reports current of selected values.
Reports supported range of parameter values.
Decimal number corresponding to the selected parameter.
0
127
128
129
Decimal number specifying the required period of silence, in units of 0.1
second, before the modem can report silence detected at the end of a voice
receive either with the “Presumed End of Message” (QUIT) or “Presumed
Hang up (SILENCE) event reports.
A value of 0 disables the modem silence detection.
The range is 0.1 to 25.5 seconds for <sdi> = 1 to 255.
Reports current of selected values.
Reports supported range of parameter values.
Decimal number identifying the compression method.
<range of values> containing the supported range of voice samples per
second of the analog signal.
<range of values> containing the supported range of sensitivity settings for
voice receives.
<range of values> containing the supported range of expansion values for
voice transmits.
Reports current of selected values.
Reports supported range of parameter values.
Use +VSM silence compression setting and algorithm for long-term
silence detection (if +VSM is in use) or proprietary silence
compression setting and algorithm for long-term silence detection (if
+VSM is not in use).
Sets less aggressive long-term silence detection independent of
presence or use of silence compression.
Sets nominal long-term silence detection independent of presence or
use of silence compression.
Sets more aggressive long-term silence detection independent of
presence or use of silence compression.
Chapter 3 – Voice Commands
34