ARRIS has announced availability of a high density "quad octal" module for its D5 Universal Edge QAM (UEQ) solution. The QPM (Quad Port Module) 8DX4 is a high density QAM-RF module designed to be used for VOD, SDV and DOCSIS M-CMTS applications. It has four RF ports, each capable of outputting up to eight QAM channels that meet the DOCSIS DRFI specification. The configuration of each RF output is designed to be flexible, allowing support for multiple services on a single QAM channel, on multiple QAM channels within a bonded serving group, or on different QAM modules in the D5 UEQ. The architecture of the card is also designed to allow for future expansion to a higher number of QAM channels via software. The D5 UEQ with QPM 8DX4 installed is designed to support up to 192 Annex B 256-QAM Channels and 144 Annex A 256-QAM channels with software release 3.0. It also includes a demodulation of the downstream channels to monitor and analyze the performance of the QAM channel.

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