The Broadcom HDSP-523E is a high-performance, voice and data modem designed for use in access networks that require high-speed throughput and reliable performance. The device combines digital signal processing with the industry-standard V.92 protocol for interactive data services with speeds up to 56 Kbps. The HDSP-523E supports V.90/K56flex, and data is transferred over standard telephone lines. It also includes features such as error correction/detection, data compression, auto-answer, and caller ID. Its rugged, heat-resistant aluminum chassis design makes it suitable for environmental conditions, and it meets UL, CUL, and FCC standards.