<value> decimal number corresponding to the selected option:
0 Data compression reporting disabled (no +DR result code transmitted).
1 Data compression reporting enabled (+DR result code transmitted). (Default.)
Reporting Current or Selected Values
Command: +DR?
Response: +DR: <current value>
Example: +DR: 1 For the default setting.
Reporting Supported Range of Parameter Values
Command: +DR=?
Response: +DR: (<value> range)
Example: +DR: (0,1)
+DR: <type> Intermediate Result Code
The +DR: <type> reported represents the current (negotiated or renegotiated) modem-modem
data compression type. If enabled, the intermediate result code is transmitted at the point after
error control negotiation (handshaking) at which the modem has determined which data
compression technique will be used (if any) and the direction of operation. The +DR
intermediate result code, if enabled, is issued after the Error Control Report (+ER) and before
the final result code (e.g., CONNECT).
The format of this result code is:
Result Code Syntax
+DR: <type>
Defined Values
<type> An alphanumeric code corresponding to the selected option:
NONE Data compression is not in use.
V42B V.42bis is in use in both directions.
ALT MNP 5 compression.
Example
+DR: V42B
%C - Enable/Disable Data Compression
Enables or disables data compression negotiation. The modem can only perform data
compression on an error corrected link.
Syntax
%C[<value>]
Defined Values
<value> A decimal number corresponding to the selected option:
0 Disables data compression.
1 Enables both V.42 bis and MNP 5 data compression.
2 Enables both V.42 bis and MNP 5 data compression.
3 Enables both V.42 bis and MNP 5 data compression. (Default.)
Result Codes
OK <value> = 0, 1, 2, or 3.
ERROR Otherwise.
N - Automode Enable
This command is included for compatibility only and has no effect other than returning a
result code. The only valid values are 0-1.
Syntax
N[<mode>]
Defined Values
<mode > Decimal number corresponding to the selected value: 0-1.
Result Codes
OK <mode> = 0 to 1.
