Hi there, I have a question in regards to intercom and shared lines.SPA 400 1.1.2.2SPA 9000 6.1.5SPA 942 6.1.3(aSPA 922 6.1.3(a)I have spa 9000, 400 combo with 2 x spa 942 and 2 x spa 922Extension listext 100 spa942 (shared line apps 101,102,106)ext ...