LG Electronics IP LDK-20 installation manual System Components

IP LDK-20 Installation Manual					Introduction
1.3 System Components
	ITEM		OPTION BOARD	DESCRIPTION
	KSU			Key Service Unit
	PSU			Power Supply Unit, 90W
	Main	MBUB		Main Board Unit (2BRI, 4DKT, 2DKT/SLT, and 2SLT)
			CO boards	Central Office Line interface boards (LCOB, STIB,CBIB)
	Board
			EXT boards	Extension boards (DTIB, SLIB)
		LCOB		Loop Start CO Interface, 4 lines
			PRU4	Polarity Reversal detection Unit
			PRCPTU4	Polarity Reversal & Call Progress Tone detection Unit
			CPCU4	Caller-ID(FSK), Polarity Reversal &	Call Progress	Tone
				detection Unit
	CO Line	CBIB		Loop Start CO Interface, 2 lines
	Boards			Basic Rate(Only T) Interface Board, 1 line (2 channels)
			PRU2	Polarity Reversal detection Unit
			PRCPTU2	Polarity Reversal & Call Progress Tone detection Unit
			CPCU2	Caller-ID(FSK), Polarity Reversal &	Call Progress	Tone
				detection Unit
		STIB		ISDN Basic Rate (S/T) Interface Board, 2 lines (4channels)
		DTIB4		Digital Terminal Interface Board, 4 ports
	Extension	DTIB8		Digital Terminal Interface Board, 8 ports
	Boards	SLIB4		SLT Interface (+36V Feed) Board, 4ports
		SLIB8		SLT Interface (+36V Feed) Board, 8ports
		VMIBE		Enhanced Voice Mail Interface Board, 4 channels
	Other	AAFBE		Enhanced Auto Attendant Function Board, 3 channels
	Boards	LANU		LAN interface Unit (10Mbase-T only)
		MODU		MODEM unit (33Kbps)
		VOIM		Voice over Internet protocol interface module (4 channels)
	Expansion		VOIU	Voice over Internet protocol interface unit.(4 channels)
	Modules	SLIM		SLT Interface (+36V Feed) module, 8ports
		DTIM		Digital Terminal Interface module, 8 ports

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