Here is a great link for info on troubleshooting and proper installation of Lon/Bacnet/other hvac networks - It is one hour for streaming audio but you can also download the information w/o the audio.
Kudos to Engenuity and Al Mouton at Loytec for putting this together.
"How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
BIG Government = More Dependents
"Any 'standard' would be great if it didn't get bastardised by corporate self interest." MatrixTransform