Sure, here's a refined and simplified title based on the keywords provided: Grandstream HT814 4-FXS Office HD NAT Router 2-SIP VoIP Gateway

The HT814, a powerful VoIP technology and routing capabilities solution, is designed for both home and office environments, allowing users to successfully connect their analog devices to a manageable, robust network. Built upon Grandstream's market-leading SIP ATA/gateway technology, with millions of units successfully deployed worldwide, this powerful Analog Telephone Adapter (ATA) offers exceptional voice quality in various applications and environments.

Featuring 4 easy-to-use FXS ports, the HT814 also boasts an integrated Gigabit NAT router, state-of-the-art encryption with a unique security certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance. This Grandstream IP Telephone Adaptor supports 2 SIP profiles through its 4 FXS ports and dual Gigabit ports, and includes a built-in NAT router capable of handling routing speeds up to 100MBps.

To ensure the security of calls and accounts, the HT814 employs TLS and SRTP encryption technology. Moreover, the device offers automated provisioning options, including TR-069 and XML config files, simplifying the deployment and management process for businesses and service providers.

With its robust features and exceptional performance, the HT814 delivers a comprehensive solution for seamlessly integrating analog devices into a modern, VoIP-enabled network. Whether in a home or office setting, users can enjoy the benefits of reliable, high-quality voice communication while leveraging the convenience and efficiency offered by this versatile Grandstream IP Telephone Adaptor.

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