Westermo TDW-33 - Manual (Page 8)

6618-3202 8
%Cn – Select data compression
Supported by: TDW-33 TD-36 TD-36 485 TR-36 TR-36B
Description:
This command enables or disables data compression. The modem can only perform data
compression on an error corrected link. The parameter value, if valid, is written to S41
bit 0 and 1.
Syntax:
AT%C<n>
Parameters:
<n>
0: No compression. Resets S46 bit 1.
1: Enables MNP 5 data compression. Resets S46 bit 1.
2: Enables V42bis data compression. Sets S46 bit 1
3: Enables both V.42bis and MNP5 data compression. Sets S46 bit 1. (Default)
Command example Possible responses Note
AT%C<n> OK The command is valid
and accepted
ERROR Otherwise
S register: The value is written to S41 bits 0 and 1 and S46 bit 1
&Cn – DCD Option
Supported by: TDW-33 TD-36 TD-36 485 TR-36 TR-36B
Description:
This command controls the DCD output in accordance with the parameter supplied
Syntax:
&C<n>
Parameters:
<n>
0: DCD remains ON at all times
1: DCD follows the state of a carrier (Default)
Command example Possible responses Note
AT&C<n> OK The command is valid
and accepted
ERROR Otherwise
S register: The value is written to S21 bit 5