NEC PN-4DLCA Digital Line Circuit Card NEAX2000 IVS PBX 4-Port Module

NEC PN-4DLCA Digital Line Circuit Card NEAX2000 IVS PBX 4-Port Module

The NEC PN-4DLCA is a 4-port digital line circuit card designed for use in the NEC NEAX2000 Integrated Voice Server (IVS) PBX telephone system. It provides the digital line interface circuitry that connects digital telephone sets or digital trunks to the NEAX2000 switching matrix, enabling the system to support digital voice communications across up to four ports per card.

Specifications & What's Included

• Manufacturer: NEC
• Part Number: PN-4DLCA
• Type: Digital Line Circuit Card
• Number of Ports: 4
• Form Factor: Card / Module (PCB blade)
• Compatible System: NEC NEAX2000 IVS (Integrated Voice Server) PBX
• Edge connector for NEAX2000 card cage installation
• Four transformer sets visible on PCB (one per port)
• Main controller IC and support logic on-board
• Card only — no additional accessories included

Applications

The NEC NEAX2000 IVS was a widely deployed mid-size PBX platform introduced in the 1990s, used in hotels, corporate offices, healthcare facilities, and campus environments. Digital line circuit cards like the PN-4DLCA slot into the NEAX2000 card cage to expand or replace the system's digital extension capacity, each card supporting a set number of digital ports. These cards remain in demand for sites still running legacy NEAX2000 systems — a common scenario in facilities that have not yet migrated to VoIP platforms — as replacements for failed cards or for capacity additions. NEC's NEAX line was one of the dominant enterprise PBX families of the 1990s and early 2000s, and spare cards continue to be sought by system maintainers and telecommunications technicians servicing those installed bases.