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Appendix C ~ Serial Commands
Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
MUTE
This command changes or reports the state of mute for a given channel.
Command form: MUTE <CH> <X1> <X2>
Explanation
Channel 1 = Mic/Line Input, Line Output
2 = Aux Input, Aux Output
3 = 4 Wire Input, 4 Wire Output
4 = Telco Input, Telco Output
Value 1 I = Specifies input
O = Specifies output
Value 2 0 = Sets mute to Off
1 = Sets mute to On (mute the selected channel)
2 = Toggles between states (regardless of current state)
Null = Reports current mute state for the selected channel
Return values
The command will return the mute status (On=1, Off=0) in the same format as the
command.
NLP
This command changes or reports back the state of the nonlinear processing for the
echo canceller. Command form:
NLP
<X>
Explanation
Value 0 = Sets the state to Off
1 = Sets the state to soft
2 = Sets the state to medium
3 = Sets the state to aggressive
Null = Returns the current state
Return values
The command will return the updated condition (0=Off, 1=Soft, 2=Medium,
3=Aggressive) of the nonlinear processing in the same format as the command.
NULL
This command sends a short noise burst down the telephone line and adapts the
GT1524 to the telephone line. Command form:
NULL
Return values
NULL is returned out the serial port when the command has been executed.