Hi,
The other solution is to make a specific adaptor from your own modules to a 'standard', then you can connect up to anyone else. The black box with the computer screen on is one of these and connects my 4 UK modules to the American and Norwegian ones further along. Total length about 40 meters. DCC controlled with RR & Co and 4 power districts.
We also use a telephone exchange to talk to each other, as we don't send trains up the line, but take them from your neighbour.
Regards Dave