US Robotics 56 K SOFTMODEM - COMMAND REFERENCE REV 1 Manual do Utilizador descarregar pdf (Página 45)

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.

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 107 108

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US Robotics 56 K SOFTMODEM - COMMAND REFERENCE REV 1 Manual do Utilizador Página 45