InfoSewer and InfoSWMM Nodes
InfoSewer and InfoSWMM are link/node networks but the nodes are of different types in both models. InfoSewer has a distinction between loading manholes or junctions and chamber junctions that start or separate Force Main links. InfoSewer nodes are types 1 through 4 and InfoSWMM nodes are types 5 through 8 in this image.
InfoSWMM has more generic node types than in InfoSewer so a junction can be both a Loading and Chamber Manhole if you are more familar to the InfoSewer names.