Ds44; V.44 Data Compression - Multitech MultiModem SocketModem MT9234 Series At Commands Reference Manual

+DS44

Description:
Syntax:
<direction> Values: Specifies the DTE direction of the data compression.
<max_codewords_tx> Values:
max_codewords_rx Values:
max_string_tx Values:
max_string_rx Values:
max_history_tx Values:
max_history_rx Values:
Reports:
Result Codes:
Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H)
Downloaded from Elcodis.com electronic components distributor
Chapter 1 – AT Commands, S-Registers, and Result Codes

V.44 Data Compression

Controls the V.44 data compression function.
AT+DS44=<direction>,<compression_negotiation>,<compatibility>,
<max_codewords_tx>, <max_codewords_rx>,<max_string_tx>,
<max_string_rx>,<max_history_tx>,<max_history_rx>
0 No compression.
3 Compression in both directions (default).
Specifies the maximum number of code words to be negotiated in the transmit
direction.
1024 Default.
256–2048 Maximum number of code words in transmit direction.
Specifies the maximum number of code words to be negotiated in the receive
direction.
1024 Default.
256–2048 Maximum number of code words in receive direction.
Specifies the maximum string length to be negotiated in the transmit direction.
255 Default.
31–255 Maximum string length in transmit direction.
Specifies the maximum string length to be negotiated in the receive direction.
255 Default.
31–255 Maximum string length in receive direction.
Specifies the maximum length of the history buffer to be negotiated in the transmit
direction.
5120 Default.
512–11008 History buffer size in transmit direction.
Specifies the maximum length of the history buffer to be negotiated in the receive
direction.
4096 Default.
512–11008 History buffer size in receive direction
+DS44=? Reports supported options.
Example: +DS44: (3, 0), (0), (0), (256-2048), (256-2048), (31-255), (31-255),
(512-11008), (512-11008).
+DS44? Reports current or selected options.
Example: +DS44: 3, 0, 0, 1024, 1024, 255, 255, 5120, 4096.
OK
ERROR
25