Issue 7.0 UNIVERGE SV81003 - 42 Installing the SV8100 Chassis4. Gently push until the blade seats. Tighten the two retainingscrews on front of the blade.2.7.4 Installing Expansion Blades in the 19” Chassis (Optional)When adding additional chassis to the system to expand thecapacity, a PZ-BS10 must be installed in the Controlling Chassis anda PZ-BS11 must be installed in all Expansion Chassis. Thisconnection is required with any multiple-chassis setup.The PZ-BS10 connects the Controlling Chassis to the ExpansionChassis by connecting to a PZ-BS11, which is installed on eachExpansion Chassis. These Expansion Interface Units allow the CPUto transmit/receive data as required to the additional chassis.The PZ-BS10 is installed in the EXIFU slot of the Controlling Chassiswhich is equipped with a CPU card. The PZ-BS11 is installed in theexpansion slot of the Expansion Chassis, which does not have aCPU.The EXIFU cable connects the Controlling Chassis and its EXIFU-B1interface to the second, third, and fourth EXIFU-E1 interface.Use only the CAT 5 cables provided by NEC to make theconnections between the Controlling and Expansion Chassis.The PZ-BS10 provides: Communication Processor Interface for data handling throughCommunication Channel (24 slots maximum) 32 Channels for Telephony Resource (e.g., DTMF ToneReceiver, Call Progress Tone Detector, MFC Tone Receiver,Caller ID Receiver, Caller ID Signal Sender) DSP Resource ManagementFigure 3-47 CD-CP00 Blade Installed