's UNIVERGE SV8100 series
EF2-4.5NUX is part of NEC's UNIVERGE SV8100 series. It is a 200-port Hybrid IP/digital station card that supports IP, digital, Centralized (CO) and Remote (CAS) Line interfaces. The EF2-4.5NUX supports up to 16 Analog Types 2 (R2) Lines and up to 192 Digital Station System ports up to 2CT Bus. Line Searches are supported and an optional 2nd processor can be added for more DSS ports. It provides control for NEC's USB-2AX digital station cards for up to 512 total digital station ports. The card also contains a variety of features, including Music on Hold, Call Blocking, Call Forwarding, and Call Waiting. Additionally, features such as Extension to Extension Lockout, Call Record, and Set Speed Dial are available.