Longshine LCS-8056C2 - Manual (Page 148)

Commands for Host-Processed Modems Reference Manual
5-16 Conexant 100498E
+VSM - 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>
Defined Values
<cml> Decimal number identifying the compression method.
<vsr> <range of values> containing the supported range of voice samples
per second of the analog signal.
<scs> <range of values> containing the supported range of sensitivity
settings for voice receives.
<sel> <range of values> containing the supported range of expansion
values for voice transmits.
Reporting Current or Selected Values
Command: +VSM?
Response: +VSM: <cml>,<vsr>,<sds>, <sel>
Example: +VSM: 130,UNSIGNED PCM,8,0,127,0
Reporting Supported Range of Parameter Values
Command: +VSM=?
Response: +VSM: <cml>, <cmid>, <bps>, <tm>,<vsr>,<sds>, <sel>
<cml> Decimal number identifying the compression method (1, 128 to
133).
<cmid> Alphanumeric string describing the compression method
(UNSIGNED PCM, 8-BIT LINEAR, ADPCM, ULAW, ALAW,
or LINEAR).
<bps> Decimal number defining the average number of bits in the
compressed sample not including silence compression (4, 8, or 16).
<tm> Decimal number (0) reporting the time interval, in units of 0.1
second, between timing marks. A value of 0 reports that timing
marks are not supported.
<vsr> <range of values> containing the supported range of voice samples
per second of the analog signal (7200 or 8000).
<scs> <range of values> containing the supported range of sensitivity
settings for voice receives (0).
<sel> <range of values> containing the supported range of expansion
values for voice transmits (0).