891005 NEC NEC Aspire PBX Expansion Card

The NEC 891005 IP1-E-4COIU is a 4-port Central Office (CO) line unit designed for NEC Aspire series IP-enabled PBX systems. This expansion card provides analogue trunk connectivity, allowing the telephone system to interface with standard PSTN lines for inbound and outbound calling.

The 4COIU module is deployed within NEC Aspire IP1 chassis to expand trunk capacity. It enables businesses to connect multiple analogue telephone lines from their service provider, supporting traditional voice services alongside IP telephony infrastructure.

The NEC Aspire series is a legacy business telephone platform that was widely deployed in small to medium enterprise environments. While discontinued, these systems remain in active service at many sites, creating ongoing demand for expansion cards and replacement modules.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.