We're replacing the availability of the Grandstream HT812, HT814, and HT818 routers with the improved v2 of these same devices. The v1 will no longer be available. Check out the details:
The HT812 v2 is an advanced 2-port analog telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit NAT router.
The HT814 v2 is an advanced 4-port VoIP gateway with 4 FXS ports and an integrated Gigabit NAT router.
The HT818 v2 is a powerful 8-port VoIP gateway built for users looking for a strong analog-to-VoIP converter.