FS-246
FS-246 Key Service Unit
FS-246PS Power Supply
FS-10 4 Ckt Station Cartridge
FS-20 2 Ckt CO Cartridge
FS-25 Executive Display Cartridge
FS-30 Deluxe Display Cartridge
FS-36 Door Announcer
FS-800 Standard Telephone
FS-900 Executive Display Phone

Landmark
DKS-308 3x8 Key Service Unit
DKS-616 3x8 KSU Expansion Board
DKS-825 Associate Keyset
DKS-925 Professional Keyset w/Display
DKS-935 Professional Keyset Plus
DKS-940 DSS/BLF Console
DKS-40 3x8 Power Supply
DKS-45 6x16 Power Supply
DKS-50 Analog Adapter
DKS-55 Option Board