The Grandstream HT881
is a powerful Analog FXO Gateway designed to bridge traditional telephony systems (PSTN lines) with modern VoIP networks. It enables businesses to integrate analog lines into IP-based communication systems easily.
The device features 8 FXO ports and 1 FXS port, allowing connection of multiple analog lines while also supporting a fallback analog phone connection.
It supports up to 3 SIP profiles, making it compatible with a wide range of IP PBX systems, whether hosted or on-premise.
The HT881 includes advanced features such as:
- Lifeline support (automatic fallback during power failure)
- T.38 Fax support for reliable fax over IP
- 3-way conferencing per port
- Failover SIP server for uninterrupted communication
- AES encryption & secure provisioning (TR-069)
It also integrates a high-performance NAT router and Gigabit network ports, making it suitable for enterprise deployments.
This gateway is ideal for businesses migrating to VoIP while still using existing analog infrastructure.
Specs
| Feature | Details |
|---|---|
| Brand | Grandstream |
| Model | HT881 |
| Product Type | Analog FXO Gateway |
| FXO Ports | 8 × RJ11 |
| FXS Ports | 1 × RJ11 |
| SIP Profiles | Up to 3 |
| Network Ports | 2 × Gigabit RJ45 |
| PoE | Yes (on one port) |
| Voice Codecs | G.711, G.729, G.723, Opus |
| Fax Support | T.38 Fax over IP |
| Conferencing | 3-Way per Port |
| Security | AES Encryption, TLS |
| Features | Failover SIP, Lifeline Support |
| Management | Web GUI, TR-069, GDMS |
| Application | IP PBX Integration, VoIP Migration |
| Color | Black |
Additional information
| Audio / Voice Quality | Standard Voice |
|---|---|
| Bluetooth & WIFI | Not Supported |
| Concurrent Calls | 8 Concurrent Calls |
| Display Type | Non-Display |
| FXO Ports | 8 Ports |
| FXS Ports | 1 Port |
| Management Platform | GDMS Networking (Cloud), Local Web GUI |
| Mounting Options | Desktop |
| POE | Support POE |
| Ports | 2 Ports |
| Ports Speed | 1G |
| Video Conferencing | Not Supported |
