Specifications

Chapter 16 – Extended AT Commands in IS707.3
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 119
Select Multiplex Option +CMUX
Description: The numeric parameter is used to select multiplex option. This command is used to set the maximum
number of multiplex options on the forward and reverse links for MDR calls. If a reverse parameter value is
not specified, it is set to the forward parameter value.
Values: <forward>
Hexadecimal value: 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, F
<n>
1 Multiplex Option 1
2 Multiplex Option 2
Syntax: Command syntax: AT+CMUX=<forward>,[<reverse>]
Command Possible Responses
AT+CMUX?
Note: Display the current setting.
+CMUX: C, 2
OK
Note: Command is valid
AT+CMUX=?
Note: Display valid parameter range.
+CMUX: (1-9,A-D,F), (1,2)
OK
Note: Command is valid
AT+CMUX=1
Note: Set multiplex option 1.
OK
Note: Command is valid
Hang-up Voice +CHV
Description: The numeric parameter is used to Hang-up a voice call. It terminates a voice connection previously
established up +CDV (dial voice) or $QCCAV (answer voice). The only valid parameter is zero, which is
optional.
Values: <n>
0 Hang-up voice call
1-255 Reserved.
Syntax: Command syntax: AT+CHV<n>
Command Possible Responses
AT+CHV
Note: Display the current setting.
OK
Note: Command is valid
AT+CHV0
Note: Hang up the call.
OK
Note: Command is valid