Synxcom SM9234D, User Manual

Page: 99 / 216

AT Commands
Page 99
operation of the data compression function; from the DTE
point of view.
0 Negotiated, no compression.
1 Transmit only.
2 Receive only.
3 Both directions, accept any direction. (Default.)
<compress_negotiat
ion>
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.)
1 Disconnect if V.44 is not negotiated by the remote DCE
as specified in <direction>.
<capability> Decimal number that specifies the use of stream method,
packet method, multi-packet method.
0 Stream method. (Default.)
1 Packet method.
2 Multi-packet method.
<max_codewords_t
x>
Decimal number from 256 to 2048 that specifies the
maximum number of codewords which should be negotiated
in the transmit direction. (Default = 2048.)
<max_codewords_r
x>
Decimal number from 256 to 2048 that specifies the
maximum number of codewords which should be negotiated
in the receive direction. (Default = 2048.)
<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 from 2048 to 4096 that specifies the
maximum size of the history buffer to be negotiated in the
transmit direction. (Default = 4096.)
<max_history_rx> Decimal number from 2048 to 4096 that specifies the
maximum size of the history buffer to be negotiated in the
receive direction. (Default = 4096.)
Reporting Current or Selected Values
Command:
+DS44?
Response: +DS44:<direction>,<compression_negotiation>,<capability>,
<max_codewords_tx>,<max_codewords_rx>,<max_string_tx
>,
<max_string_rx>,<max_history_tx>,<max_history_rx>
Example: +DS44:3,0,0,2048,2048,32,32,4096,4096 For the
default setting.
Reporting Supported Range of Parameter Values
Command:
+DS44=?
Response: +DS44:(list of supported <direction> values),(list of
supported compression_negotiation> values),(list of
supported <capability>values),(list of supported
<max_codewords_tx> values),(list of
supported<max_codewords_rx> values),(list of supported
<max_string_tx>values),(list of supported <max_string_rx>
values),(list of supported<max_history_tx> values),(list of
supported <max_history_rx> values)