24STUNWhen the transceiver receives a call containing a stun code,either transmit mode will be disabled, or both receive modeand transmit mode will be disabled. (This function is usedwhen a transceiver is stolen or lost, for example.) Stun iscancelled when the transceiver receives a call with a stunreset code.DUAL-TONE MULTI-F REQUENCY (DTMF) S IGNALLINGDTMF Signalling is either enabled or disabled by your dealer.This function opens the squelch only when the transceiverreceives the DTMF code (3 to 10 digits) programmed in yourtransceiver. Each transceiver is normally programmed with aunique code. You will not hear calls from transceivers that arenot programmed with a matching code.Your dealer may also program a Group Code in yourtransceiver. Ask your dealer for further details.When you receive a signal containing the correct tones,squelch opens and you will hear the call.• The LED indicator momentarily flashes orange.• To mute the speaker after squelch opens, press the keyprogrammed as Monitor or Monitor Momentary.• Your dealer can program the squelch to close again after aspecific time period elapses.• If Transpond for DTMF Signalling is programmed, anacknowledgment signal is returned to the calling station.• If Call Alert for DTMF Signalling is programmed, an alerttone will sound when the correct code is received.