VoIP.info Device reference

Grandstream HT818 v2

HT818 v2 concentrates eight analog telephone ports in a single gateway.

Reviewed 2026-09-07Exact-model manufacturer documentationFoundationalDocumentation based · not lab tested

Documented specifications

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Grandstream · Manufacturer documentation available at review; remaining support period and local availability not established.

HT818 v2: manufacturer-sourced facts
SpecificationDocumented value
FXS ports8 Source ↗
FXO portsNone Source ↗
SIP profiles2 Source ↗
EthernetTwo Gigabit Source ↗
FaxT.38 documented; end-to-end compatibility still required Source ↗
ProvisioningTR-069 Source ↗
DisplayNo user phone display; status indicators Source ↗

Unlisted fields remain unverified. Platform compatibility and remaining support life require confirmation for the exact ordered model.

What it is and why consider it

HT818 v2 concentrates eight analog telephone ports in a single gateway. It is useful for a modest legacy extension group with documented wiring and a clear migration owner.

Reasons to choose something else

Eight lines behind one appliance create a larger outage impact. Check total ringing load, cabling distance, impedance and caller-ID behavior against the exact installation rather than assuming all analog equipment behaves like a desk handset.

Deployment and acceptance checks

Label FXS and FXO cables before connecting anything. Test ringing, off-hook detection, inbound caller ID, DTMF, disconnect supervision and a long call. For fax, run both incoming and outgoing multi-page tests through the real carrier; the T.38 label alone does not prove a reliable fax path.

Record the ordered model, hardware revision, installed firmware and calling platform together. Confirm administrator and provisioning ownership before connecting a previously used device. Keep the previous configuration and a supported recovery method before changing firmware; an arbitrary downgrade can remove security fixes.

Firmware, support and evidence

Use the linked Grandstream support resources to match the device to its approved firmware and provisioning instructions. The facts above come from manufacturer documentation; no hands-on measurements, current price or merchant offer are implied.

Where the table does not specify display, SIP-account capacity, network ports, PoE, Wi-Fi, Bluetooth, codecs, headset or expansion support, that field remains unverified for this record. A base station, handset and accessory have different responsibilities; do not copy a feature between them. Confirm lifecycle notices and support entitlement before a fleet purchase.

Sources & applicability

Primary references for the technical details above. Operational examples and planning checklists are VoIP.info editorial guidance.

Examples require adaptation to your topology. No live PBX or hardware testing is claimed.