NORTEL MERIDIAN NT4N48AA SYS UTIL Board, Pre Owned

Description:

The Nortel Meridian NT4N48AA is a System Utility Card designed for use in medium to large-scale Nortel Meridian 1 PBX systems, specifically the Option 61C and Option 81C. It serves as a common equipment card that provides essential maintenance and utility functions for the system's core processing and shelf management.
System Maintenance: Manages internal maintenance routines, diagnostic checks, and monitoring of system health.
Interface Management: Often used to monitor and manage I/O ports, serial ports, and D-channels within the PBX infrastructure.
Clocking & Signaling: Provides or manages signaling between the CPU and the peripheral equipment (PE) shelves, often working in tandem with network cards to ensure real-time application timing.
Form Factor: Internal PCI card.
Protocols: Supports T-1 line rates and multimedia services including voice and value-added IP data.
Connectivity: Wired interface with a max transfer rate of 1.544 Mbps.
Redundancy: Typically part of the standard redundant core processing architecture found in Option 61C and 81C systems to ensure high reliability.