Nortel Networks proprietary hardware that processes the voice and data signals that arrive from the switch. A DSP can be in one of the following forms:
embedded in an MPC section on an MPB16-4 or MPB96 board
embedded in an MPC section on the motherboard of an IPE (200i or 201i) server
embedded in a removable MPC-8 card that is inserted into an MPB board or IPE (200i or 201i) server
Each embedded DSP or MPC-8 card provides eight multimedia processing units (MPUs).