12 Self Proguamming Mode35• You can program the DQT (Normal) in steps of 1.• You can program the DQT (Normal) according tothe normal table of codes.• The QT/DQT is not used.Press and hold the [|] key for more than 1second to toggle between Normal and Inversewhen DQT is programmed.• “N” represents Normal.• “I” represents Inverse.12.2.1.5 Option SignallingThis function allows you to select whether or not touse DTMF Decode as Option signalling.The following display appears when not using DTMFDecode.The following display appears when using DTMFDecode.Note: You cannot use the [|] key for this configuration.12.2.1.6 SP UnmuteThis function allows you to program the conditionsfor unmuting the speaker.The transceiver unmutes the receiver whenreceiving the carrier.You can select Carrier only when the QT/DQTDecode is set to None.The transceiver unmutes the receiver when thereceived QT/DQT code matches the QT/DQT codeprogrammed in the Channel.You can select QT/DQT only when the QT/DQTDecode is set to None.The transceiver unmutes the receiver whenreceiving the carrier signal and DTMF matches.You can select Carrier + DTMF only when theQT/DQT Decode is set to None.