AT Commands Reference Manual

AT Commands Reference Manual
+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=,,,
Defined Values
Decimal number identifying the compression method.
containing the supported range of voice
samples per second of the analog signal.
containing the supported range of
sensitivity settings for voice receives.
containing the supported range of
expansion values for voice transmits.
Reporting Current or Selected Values
Command: +VSM?
Response: ,,,
Example: 1,8000,0,0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +VSM=?
Response: ,,,,,,
Decimal number identifying the compression method (1, 129,
130, 140, or 141).
Alphanumeric string describing the compression method
(UNSIGNED PCM, IMA ADPCM, UNSIGNED PCM, 2 Bit
ADPCM, or 4 Bit ADPCM).
Decimal number defining the average number of bits in the
compressed sample not including silence compression (2, 4 or
8).
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.
containing the supported range of voice
samples per second of the analog signal (8000).
containing the supported range of
sensitivity settings for voice receives (0). A 0 indicates not
supported.
containing the supported range of
expansion values for voice transmits (0). A 0 indicates not
supported.
100722B Conexant 6-17