After you've set up and activated the C4FM connector, switch the modem to
NXDN® mode. Only calls in DN (Digital Narrow) mode will be converted to your
NXDN® radio. If someone transmits in other modes on the C4FM network, you
will hear silence on your NXDN® radio.
Your outgoing callsign will be the callsign associated with the NXDN® source ID.
If there's no callsign associated to the ID, then the callsign will be the Default
callsign for cross mode calls. If this is not set, your outgoing callsign will be your
radio's NXDN® ID as text.
An incoming call's source NXDN® ID will be set to the ID associated with the
source callsign. If there's no ID associated, and the source callsign can be parsed
into a number, it will be used as the source NXDN® ID. Otherwise the Default
cross mode source ID will be used.
All calls coming from the C4FM network will be sent as a group call to the
Default cross mode destination ID. If you don't hear calls on your radio then
make sure this ID is in the selective call list (or SelCall is turned off), or it's the
TX contact of the current channel.
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