13AUXILIARY FUNCTIONSThe following functions can be set up by your dealer.■ Time-out Timer (TOT)The TOT is used to automatically inhibit transmission after a specified timeelapses. If the PTT switch is held down for longer than the programmed time,the transceiver will stop transmitting and a warning tone will sound. To stopthe warning tone, release the PTT switch.■ Busy Channel Lockout (BCL)BCL prevents you from interfering with other stations that may be using thesame channel as you. When you press the PTT switch while the channel is inuse, a warning tone sounds and the transceiver does not transmit. To stopthe warning tone, release the PTT switch.If BCL override has been enabled, you can press the PTT switch again within0.5 seconds to cancel BCL. The transceiver will transmit.■ 2-Tone/ DTMF Signaling2-Tone/ DTMF signaling will only open the squelch when the proper code isreceived. When the transceiver receives a correct code, the CALL iconflashes.If transpond has been enabled, the transceiver automatically sends anacknowledgement signal after receiving the 2-Tone/ DTMF signal.If alert tone has been enabled, an alert tone sounds after receiving the2-Tone/ DTMF signal.■ Roll Over/ Dead EndIf roll over is enabled and you are pressing the Channel Up and ChannelDown keys, when you reach the maximum or minimum number, the numberwill roll over to the minimum or maximum number. For example, when thepressing the Channel Up key, the channel number increases. When itreaches its maximum value, it rolls over to its minimum value and then startsto increase again.If dead end is selected, when you reach the maximum or minimum value, thevalue will not change. For example, when when the pressing the ChannelUp key, the channel number increases. When it reaches its maximum value,it stops. You must then press the Channel Down key to change the value.