The Grandstream HT881 is a professional Analog FXO Gateway designed to connect traditional PSTN telephone lines with modern VoIP and IP-PBX systems. It provides a reliable and cost-effective solution for businesses that need to integrate existing analog telephone infrastructure into an IP-based communication environment.
The HT881 features 8 RJ11 FXO ports for connecting PSTN lines and 1 RJ11 FXS port for connecting an analog telephone or other compatible analog device. It supports up to 5 SIP profiles, providing flexible integration with hosted and on-premise IP PBX platforms.
The device includes 2 Gigabit Ethernet ports, with one supporting 802.3af PoE-PD, as well as a built-in high-performance NAT router. It also provides advanced voice, security, provisioning, and failover features, making it suitable for business offices, branch locations, hotels, and hybrid VoIP environments.
Key Features:
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8 × RJ11 FXO ports for PSTN telephone line connectivity.
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1 × RJ11 FXS port for analog telephone or device connectivity.
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Supports up to 5 SIP profiles.
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2 × 10/100/1000Mbps Gigabit Ethernet ports.
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One Ethernet port supports 802.3af PoE-PD.
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Built-in high-performance NAT router.
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Supports 3-way voice conferencing.
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Supports T.38 Fax over IP.
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Automatic failover to a secondary SIP server.
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Lifeline support for continued analog communication during power outages.
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Supports multiple caller ID formats.
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Advanced call features including call waiting, call transfer, call forwarding, call hold, and Do Not Disturb.
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Supports multiple voice codecs including Opus, G.711, G.723.1, G.729, G.726, and iLBC.
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Advanced echo cancellation and dynamic jitter buffer.
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Supports SRTP, TLS/SIPS, HTTPS, and AES encryption.
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Supports VLAN and QoS for optimized voice traffic.
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Supports secure and automated provisioning through TR-069 and other provisioning methods.
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Compatible with leading IP-PBX and SIP-based communication platforms.
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Supports Zero Configuration provisioning when used with Grandstream UCM IP PBXs.
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Compact design suitable for business and branch deployments.
Applications:
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Business offices and enterprises.
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Small and medium-sized businesses.
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Branch offices.
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Hotels and hospitality environments.
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PSTN-to-VoIP integration.
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Hybrid analog and IP telephony systems.
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Connecting traditional telephone lines to IP-PBX platforms.
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Fax-over-IP deployments.
The Grandstream HT881 provides a reliable bridge between traditional PSTN telephone infrastructure and modern VoIP networks, allowing organizations to preserve existing analog telephone investments while benefiting from the flexibility, scalability, and advanced features of IP-based communications.
