Samsung OfficeServ 500 General Description Manual page 22

DS 5064B AOM
(See Figure 2–4)
• 64 programmable keys with red lights
• A maximum of 4 can be assigned to any keyset to provide addi-
tional programmable keys
• A maximum of 32 per system
DS-KDB-FULL DUPLEX INTERFACE (DS-KDBF)
This is a daughter board that can be installed only in the DS 5021D or DS 5014D keysets. The standard speaker-
phone mode of operation for a DS 5000 keyset is "half duplex" . This means that you cannot transmit and receive
speech at the same time. Adding a KDBF to your keyset will convert the speakerphone into full duplex mode
enhancing its operation. The FKDBF does not require a second "B" .
2.10
FIGURE 2-4