Door Phone And Door Phone Interface Module (Dpim) - Samsung OfficeServ 7400 General Description Manual

CHAPTER 2. OfficeServ 7400 Hardware
KDB-Full Duplex (KDB-F)
The standard speakerphone mode of operation for 2-line LCD keysets is 'half
duplex'. This means that you cannot transmit and receive speech at the same
time. Adding a KDB-F to your keyset will convert the speakerphone into full
duplex mode, enhancing its operation. In addition, the KDB-F may have up to
three external microphones attached to it for conference room type applications.
These microphones require an 'EXTMIC' key programmed on the keyset to
activate or deactivate them.

2.4.6 Door Phone and Door Phone Interface Module (DPIM)

The DPIM adapts any DLI circuit for use with the door phone unit. The unit is commonly
used to request entry through locked doors (interior or exterior) or as a room monitoring
box. It provides contact control to be used with a customer-provided electric door lock. The
door phone is wall-mounted. An external weather- resistant unit is also available.
DPIM
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Door Phone
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