Ok. My actual setup is.

CPU F(50)-20
empty slot
ESI-F(8)-21
ESI-F(8)-21
SLI-F(8G)-21
COI-F(8)-30
COI-F(8)-30
ESI-F(8)-21
empty slot
empty slot

13 C.O Lines
22 stations


I have located another VMS-F(4)-20 with 1-year warranty. If no other modules are required, I think i can accomodate the VMS-F(4)-20 and the VRS-F(4)-11 in the system with no probelm.