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Grandstream HT881 (8 Port FXO)

$420.00
on your 1st bill

The Grandstream HT881 is an 8-port analog FXO gateway that connects up to eight existing PSTN phone lines to a hosted or on-premise IP PBX, with an additional FXS port and lifeline support that keeps a phone working during a power outage.

Enquire About This Adaptor

SKU: VG-IPG-HT881

Key Features

  • 8 FXO ports for connecting existing PSTN/analog phone lines
  • 1 additional FXS port for a local analog phone or fax
  • Supports 3 independent SIP profiles
  • Lifeline support — the FXS port auto-switches to an FXO line during a power outage
  • Built-in high-performance NAT router
  • Dual Gigabit Ethernet ports with PoE
  • T.38 Fax over IP and 3-way conferencing per port
  • Strong AES encryption with a unique security certificate per unit

At a Glance

Ports8 FXO ports + 1 FXS port
NetworkDual Gigabit Ethernet with PoE
DirectionFXO — connects existing PSTN/analog phone lines into your VoIP system

Why Choose the Grandstream HT881?

The HT881 is the right fit when you want to keep existing PSTN lines in service alongside a VoIP rollout — common for branch offices or sites where full number porting is not ready yet, and its lifeline feature keeps a phone alive if the power drops.

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