Kenwood NX-1300DE3 User Manual page 75

OPTIONAL SIGNALING
Your dealer may also program several types of optional signaling for your
transceiver channels.
2-tone Signaling [Analog]
2-tone Signaling opens the squelch only when your transceiver receives a call
containing a matching 2-tone signal.
DTMF Signaling [Analog]
DTMF Signaling opens the squelch only when the transceiver receives a call
containing a matching DTMF code.
MDC-1200 Signaling [Analog]
MDC-1200 is a data system using Audio Frequency Shift Keying (AFSK).
FleetSync Signaling [Analog]
FleetSync Signaling opens the squelch only when the transceiver receives a
call that matches the FleetSync ID in FleetSync Signaling. Refer to "FleetSync:
ALPHANUMERIC 2-WAY PAGING FUNCTION" {p. 76}.
NXDN ID Signaling [NXDN]
NXDN ID is an optional signaling system available only for digital communications.
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