Ds44 - v.44 compression select, Syntax, Defined values – Longshine LCS-8156C1 User Manual

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AT Commands for CX930xx Modem Reference Manual

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+DS44 - V.44 Compression Select

This extended-format compound parameter controls the V.44 data compression function.

Syntax

+DS44=[<direction>[,< compress_negotiation >[,<capability>[,<max_codewords_tx>
[,<max_codewords_rx>[,<max_string_tx>[,<max_string_rx>[,<max_history_tx>
[,<max_history_rx>]]]]]]]]]

Defined Values

<direction>

Decimal number that specifies the desired direction(s) of
operation of the data compression function; from the DTE
point of view.

0

Negotiated, no compression.

3

Both directions, accept any direction. (Default.)

<compress_negotiation> Decimal number that specifies whether or not the modem

should continue to operate if the desired result is not
obtained.

0

Do not disconnect if V.44 is not negotiated by
the remote DCE as specified in <direction>.
(Default.)

<capability>

Decimal number that specifies the use of stream method,
packet method, multi-packet method.

0 Stream

method.

(Default.)

<max_codewords_tx>

Decimal number that specifies the maximum number of
codewords which should be negotiated in the transmit
direction. (Default = 512.)

<max_codewords_rx>

Decimal number that specifies the maximum number of
codewords which should be negotiated in the receive
direction. (Default = 512.)

<max_string_tx>

Decimal number from 32 to 255 that specifies the
maximum string length to be negotiated in the transmit
direction. (Default = 32.)

<max_string_rx>

Decimal number from 32 to 255 that specifies the
maximum string length to be negotiated in the receive
direction. (Default = 32.)

<max_history_tx>

Decimal number that specifies the maximum size of the
history buffer to be negotiated in the transmit direction.
(Default = 1024.)

<max_history_rx>

Decimal number that specifies the maximum size of the
history buffer to be negotiated in the receive direction.
(Default = 1024.)

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