The HT818 is an 8-port VoIP gateway with 8 FXS ports and an integrated Gigabit NAT router.

For users looking for an analog-to-VoIP converter, Grandstream has created the market-leading SIP ATA / gateway technology, which has millions of units worldwide successfully. This powerful gateway provides exceptional audio quality in a variety of application environments, with encryption with a unique security certificate per unit, automatic deployment for volume entry and device management, and outstanding network performance for enterprise use.