You get a Brookhouse MUX and a Seatalk/NMEA interface box and you should be able to deal with outputs.
Woot at Brookhouse can program your MUX to match your system requirements... or you do it yourself with a PC.
I've set up a NEMA network and use Euro style blocks. It's a drag, no connectors, but that's how NMEA 183 works.
BTW the only NMEA port on the
Raymarine can be set for 4800 or 38500 baud and AIS works only with 38500. This system gets around that.
jef
sv shiva