Samsung iDCS 500 General Description Manual page 23

iDCS KDB-DIGITAL LINE INTERFACE (FKDBD)
This is a daughterboard that can be installed only in the 18 or 28 button keyset. The
FKDBD will provide one additional DLI circuit for the connection of any digital station de-
vice such as a keyset, add-on module or DPIM. This FKDBD will only operate when the
keyset is connected to an 8 port DLI card so it can use the second B channel. Each port on
this card is intended for connection to one telephone. Connecting multiple telephones to
a port may result in incorrect operation or damage to the card.
iDCS KDB-SINGLE LINE INTERFACE (FKDBS)
This is a daughter board that can be installed only in the 18 or 28 button keyset. The
FKDBS will provide one additional SLI circuit for the connection of any standard tele-
phone device. This FKDBS will only operate when the keyset is connected to an 8 port DLI
card it can use the second B channel. Each port on this card is intended for connection to
one telephone. Connecting multiple telephones to a port may result in incorrect operation
or damage to the card.
NOTE: The circuitry on a FKDBS does not provide a loop open disconnect signal or have
the over-voltage protection necessary for OPX operation.
iDCS KDB-FULL DUPLEX (FKDBF)
The standard speakerphone mode of operation for a iDCS keyset is "half duplex". This
means that you cannot transmit and receive speech at the same time. Adding a FKDBF to
your keyset will convert the speakerphone into full duplex mode enhancing its operation.
In addition the FKDBF may have up to three (3) external microphones attached to it for
conference room type applications. These microphones require an "EXTMIC" key pro-
grammed on the keyset to activate or deactivate them.
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