MT9234ZBA-GB/IE Multi-Tech Systems, MT9234ZBA-GB/IE Datasheet - Page 25

• Manufacturer Part Number: MT9234ZBA-GB/IE
• Description: MODEM V.92 DATA/FAX WORLD BUNDLE
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZBAr

Specifications of MT9234ZBA-GB/IE

• Data Format: V.34, V.92
• Interface: RS-232
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: 881-1138

+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)
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
3
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=?
+DS44?
OK
ERROR
Example: +DS44: (3, 0), (0), (0), (256-2048), (256-2048), (31-255), (31-255),
(512-11008), (512-11008).
Example: +DS44: 3, 0, 0, 1024, 1024, 255, 255, 5120, 4096.
No compression.
Compression in both directions (default).
Reports supported options.
Reports current or selected options.
Chapter 1 – AT Commands, S-Registers, and Result Codes
25