Westermo GD-01 - Manual (Page 101)

101 6196-2220
+DS – V.42 bis data compression
Description:
This command enables or disables V.42bis data compression if this feature is supported
on the product.
Syntax:
AT+DS=<dir>,<neg>,<P1>,<P2>
Command example Possible responses Note
AT+DS=? +DS: (0-3),(0,1), Test command
(512-4096),(6-250)
OK
AT+DS=3,0,4096,250 OK Set new parameters
AT+DS? +DS: 3,0,4096,20 Current values
OK
Defined values:
Four numeric sub-parameters are accepted:
<dir>
specifies the desired direction(s) of operation of the data compression function; from the
DTE point of view, (default is 3).
0: Negotiated ... no compression
1: Transmit only
2: Receive only
3: Both directions, accept any direction
<neg>
specifies whether or not the DCE should continue to operate if the desired result is not
obtained, (default is 0),
0: Do not disconnect if V.42 bis is not negotiated by the remote DCE as
specified in <dir>
1: Disconnect if V.42 bis is not negotiated by the remote DCE as specified in
<dir>
<P1>
512-4096: specifies the maximum number of dictionary entries that should be
negotiated, (default is 4096).
<P2>
6-250: specifies the maximum string length to be negotiated, (default is 250).
B A C K