1.3 OptionsInstallation Manual 211.3 Options1.3.1 OptionsModel No. Model Name Description MaximumQuantityKX-TDA5105 Memory Expansion Card(MEC)Memory expansion card to increase Personal/System Speed Dialing number storage space,double the number of DPTs (using Digital XDPconnection), and display language selection forVM Menu. To be installed in the MEC slot.1KX-TDA5161 4-Port Doorphone Card(DPH4)4-port doorphone card for 4 doorphones, 4 dooropeners or external relays, and 4 externalsensors.1KX-TDA5166 8-Channel Echo CancellerCard (ECHO8)8-channel card for echo cancellation duringconferences.1KX-TDA5168 Extension Caller ID Card(EXT-CID)Sends Caller ID signals to extension ports. 1KX-TDA5170 4-Port Hybrid ExtensionCard (HLC4)4-port extension card for SLTs, APTs, DSSconsoles, a Voice Processing System (VPS),and PT-interface CSs. *11KX-TDA5171 4-Port Digital ExtensionCard (DLC4)4-port digital extension card for DPTs, DSSconsoles, a VPS, and PT-interface CSs.*11KX-TDA5172 8-Port Digital ExtensionCard (DLC8)8-port digital extension card for DPTs, DSSconsoles, a VPS, and PT-interface CSs.*12KX-TDA5173 4-Port Single LineTelephone Extension Card(SLC4)4-port extension card for SLTs. 1KX-TDA5174 8-Port Single LineTelephone Extension Card(SLC8)8-port extension card for SLTs. 2KX-TDA5175 4-Port ProprietaryExtension Card (PLC4)4-port extension card for APTs, DSS consoles,and a VPS.1KX-TDA5176 8-Port ProprietaryExtension Card (PLC8)8-port extension card for APTs, DSS consoles,and a VPS.2KX-TDA5180 4-Port Analog Trunk Card(LCOT4)4-port analog CO line card with 2 power failuretransfer (PFT) ports.2*2KX-TDA5191 2-Channel Message Card(MSG2)2-channel message card. 2KX-TDA5193 4-Port Caller ID Card(CID4)4-port Caller ID signal type FSK/FSK (with CallWaiting Caller ID [Visual Caller ID])/DTMF. Tobe mounted on the LCOT4 card.3