2 - 24 Chapter 2Chapter 2 - Blade Installation and Startup2.4.2 Expansion (EXIFU) Blade (Figure 2-10)The EXIFU blade provides a connection from the Controlling Chassis-B to the Base Chassis-Bexpansion unit. This connection is required with any multiple-chassis setup. This blade allows theCCPU to transmit/receive data as required to the additional chassis.The EXIFU-B1 blade is installed in the EXIFU slot of the Controlling Chassis-B which is equippedwith a CCPU blade. The EXIFU-E1 blade is installed in the EXIFU slot of the Base Chassis-B, whichdoes not have a CCPU.The EXIFU cable is used to connect the Controlling chassis and its EXIFU-B1 interface to thesecond, third, and fourth Base chassis EXIFU-E1 interface.Use only the CAT 5 cables provided by NEC to make the connections between the Base chassisand Expansion chassis.The EXIFU provides:● Communication Processor Interface for data handling through Cch (18 slots max.)● 64 Channels for Telephony Resource (ex: DTMF Tone Receiver, Call Progress ToneDetector, MFC Tone Receiver, Caller ID Receiver, Caller ID Signal Sender)● DSP Resource Management2.4.2.1 Connector Pin-Out on the EXIFU-B1 / E1RJ61 Cable Connector -EXIFU-B1 - CN2, CN3, CN 4EXIFU-E1 - CN3Pin No. Connection1 HW_UP (+)2 HW_UP (-)3 HW_DWN (+)4 FS (+)5 FS (-)6 HW_DWN (-)7 CK8M (+)8 CK8M (-)12345678
