On 2006-03-16 00:20:35 +1100, Larry said:

"Bjarke Christensen" (nej, det skal
selvfølgelig være med K da jeg er dansker) wrote in
news:4417270c$0$67256$157c6196
@dreader2.cybercity.dk:

So if you plug in the RJ's in a ordinary ethernet hub/switch it will
not work ??



I don't know, but am speculating it will require some expensive special
"box" like they have always done to us in the past. It would be nice
if it would. There's 4 ports open on my wireless router in the
boat...(c;

Larry and others,

You have to remember that ethernet is much much more than the physical
layer. Just look at the number of RFC documents specifying all the
protocols which run over a TCP/IP network!

How the data is encpsulated either via a connection sequenced protocol
(TCP/IP) or via a connectionless protocol (UDP) is basically up to the
application. NMEA is a connectionless protocol and therefore it may be
a good assumption that the ethernet variant will be likewise. However,
with radar image data being sent over it is highly likely that some
form of sequencing would be required.

Raymarine is not the only game in town as far as ethernet connectivity
goes just look at FURUNO's NavNet system and MaxSea software. Like has
been said it would take a very deep pocketed development team not to
take advantage of the TCP/IP stacks available for their chosen embedded
platform.

--
Regards,
John D Proctor