Hi all. As for substations, you can have them...but you must have a certain numb of pumps at your station per substation..I forget what it is. Also the substation should have its own phone number, and a person there...etc.... We have a few... Kathleen ********************************************************** Kathleen B. Bruce RN, BSN, IBCLC Williston, Vermont USA [log in to unmask] Remember to stop and smell the "roses!" **********************************************************************