2-16 Chapter 2Hardware Descriptions14-Button iDCS AOM / STRIP (Figure 2–23)y 14 programmable keys with red LEDsy One only can be assigned to a keyset to provideadditional programmable keysiDCS Series Keyset Daughterboards[28D and 18D Keysets Only] (Figure 2–24)iDCS 28D and 18D button keysets can have one of three different types of daughterboardsinstalled on them to enhance operation or to provide an additional local port depending onthe type of daughterboard.iDCS KDB-Digital Line Interface (FKDBD)If your keyset is connected to a Digital Line Interface (DLI) port that supports 2B+D opera-tion, you may install a daughterboard that provides a Digital Line Interface (DLI) port for con-nection of a digital station device such as a keyset or 64-button add-on module.iDCS KDB-Single Line Interface (FKDBS)If your keyset is connected to a Digital Line Interface (DLI) port that supports 2B+D opera-tion, you may install a daughterboard that provides a Single Line Interface (SLI) port for con-nection of a standard telephone device such as a cordless phone.iDCS KDB-Full Duplex (FKDBF)The standard speakerphone mode of operation for an iDCS keyset is “half duplex”. Thismeans that you cannot transmit and receive speech at the same time. Adding an FKDBF toyour keyset will convert the speakerphone into full duplex mode, enhancing its operation. Inaddition, the FKDBF may have up to three external microphones attached to it for conferenceroom type applications. These microphones require an “EXTMIC” key programmed on thekeyset to activate or deactivate them.Figure 2–23 14-Button iDCS AOM/Strip(connected to keyset)Figure 2–24 iDCS Series KeysetDaughterboards