Specifications

Chapter 8 – Communication Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide 31
<P1>
512-2048 Specifies the maximum number of dictionary entries that should be negotiated.
Default is 2048.
<P2>
6 Specifies the maximum string length to be negotiated. Default is 6.
V.42bis Data Compression Report +DR
Description: This command returns the results of data compression capability. If data reporting is enabled,
this command returns the data compression type of an incoming or outgoing data call.
Otherwise, the command returns NONE.
The intermediate result code represents current DCE-DCE data compression type. The syntax for
+DR reporting is: +DR<result>, and the result code is defined as follows:
+DR: NONE
Data compression is not in use
+DR: V42B
Rec. V.42bis is in use in both directions
+DR: V42B RD
Rec. V.42bis is in use in receive direction only
+DR: V42B TD
Rec. V.42bis is in use in transmit direction only
The +DR intermediate result code, if enabled, is issued before the final result code and after the
service report control +CR.
Syntax: AT+DR=<val>
Command
Possible Responses
AT+DR=1
Note: Reporting enabled
OK
Note: Command valid
AT+DR?
Note: Display the current value
+DR: 1
OK
Note: Command valid
AT+DR=?
Note: Display the supported values
+DR: (0,1)
OK
Note: Command valid
Values: This syntax is for setting the +DR reporting method.
<val>
0 Disable reporting (Default)
1 Enable reporting
Hang-Up 1x Data Command +WCHD
Description: The AT+WCHD command is used by the application to disconnect all 1x data calls. The
alternative is to use the DTR pin.
Syntax: AT+WCHD
Command
Possible Responses
AT+WCHD
Note: Ask for disconnection
OK
NO CARRIER