56K Softmodem
Command Reference
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equal 512, 1024, 2048, or <max_codewords_rx> does not equal 512, 1024, 2048,
or <max_history_tx> does not equal 1024, 2048, 4096, 1536, 3072, 6144, or
<max_history_rx> does not equal 1024, 2048, 4096, 1536, 3072, 6144.
The <direction> parameter sets which directions use the compression method.
The 56K Softmodem uses compression in one or both directions.
Table 3-64: Valid <direction> Values
The <max_codewords_tx> parameter specifies the maximum number of code
words to negotiate in the transmit direction. The <max_codewords_rx> parameter
specifies the maximum number of code words to negotiate in the receive
direction.
Table 3-65: Valid <max_codewords_tx> and <max_codewords_rx> Values
The <max_string_tx> parameter specifies the maximum string length to negotiate
in the transmit direction. The <max_string_rx> parameter specifies the maximum
string length to negotiate in the receive direction.
Table 3-66: Valid <max_string_tx> and <max_string_rx> Values
+DS44=<direction>,<compression_negotiation>, <capability>,
<max_codewords_tx>,
<max_codewords_rx>,<max_string_tx>,<max_string_rx>,<max_history_tx>,<m
ax_history_rx>—
The <max_history_tx> parameter specifies the maximum length of the history
buffer to negotiate in the transmit direction. The <max_history_rx> parameter
specifies the maximum length of the history buffer to negotiate in the receive
direction.
Value Meaning
0
Modem negotiates no V.44 compression.
1
Modem negotiates transmit only V.44 compression.
2
Modem negotiates receive only V.44 decompression.
3
Modem accepts compression in both or either direction (default).
Value Meaning
2048
Default <max_codewords_tx> and <max_codewords_rx> value.
512, 1024, 2048
Valid transmit and receive code word settings.
Value Meaning
255
Default <max_string_tx> and <max_string_rx> value.
32—255
Valid transmit and receive string lengths.
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