Hybrid analogue connectivity
Bring 8 compatible analogue trunk lines and one analogue endpoint into a supported SIP design.
Grandstream HT881 8-Port FXO Gateway with 1 FXS, Gigabit PoE and NAT
Not sure what you need?
Read our complete guide.
Not sure what you need?
Read our complete guide.
Grandstream • SKU HT881
A hybrid analogue gateway with 8 FXO trunk ports, one FXS endpoint port, dual Gigabit Ethernet, PoE-PD and a high-performance NAT router.
The Grandstream HT881 connects 8 compatible analogue PSTN/FXO lines to a SIP platform and also provides one FXS port for an analogue endpoint. It supports three SIP profiles, dual Gigabit Ethernet, 802.3af PoE-PD on one network port, high-performance NAT, three-way conferencing per port, T.38 fax, TR-069 provisioning and secondary SIP-server failover. A hard relay can connect the FXS port to an FXO line during a power outage when the carrier service and wiring are compatible.
Quick answer: Choose HT881 when the project requires exactly 8 FXO analogue trunk ports plus one FXS endpoint port. The two interface types are not interchangeable, and the gateway does not create a carrier or PSTN service.
Bring 8 compatible analogue trunk lines and one analogue endpoint into a supported SIP design.
Use dual Gigabit networking and 802.3af PoE-PD on the supported port in a planned network.
Hard-relay the FXS endpoint to an FXO line during power loss when the full service design supports it.
A quick fit check for Australian businesses comparing equipment for users, rooms, sites or wider projects.
| Exact model | HT881 |
|---|---|
| Telephone ports | 8 × FXO plus 1 × FXS |
| SIP profiles | 3 |
| Network | 2 × Gigabit RJ45; one supports 802.3af PoE-PD |
| Network performance | Up to 1 Gbps bridge / 100 Mbps NAT, as specified |
| Warranty | 1-year Grandstream manufacturer warranty |
It provides 8 RJ11 FXO ports for compatible analogue trunk lines.
It includes one RJ11 FXS port for a compatible analogue phone or fax endpoint.
FXO connects a compatible analogue carrier line; FXS supplies an analogue endpoint such as a phone or fax device.
Yes. One of the two Gigabit network ports supports IEEE 802.3af PoE-PD.
A hard relay can connect the FXS endpoint to an FXO line when the wiring and carrier service are compatible.
No. Emergency calling depends on the carrier, NBN equipment, wiring and power design and must be tested.
Yes. It supports T.38 and automatic G.711 fax pass-through, subject to end-to-end compatibility.
Yes. Provide the line services, PBX, fax use, network, emergency-calling plan, sites and quantity.
Connect up to 8 supported analogue carrier lines to a SIP environment.
Retain one compatible analogue phone or fax endpoint locally.
Use bridge or NAT mode within the documented performance limits.
Power the gateway from a compatible 802.3af network port where approved.
Create the supported physical fallback path when the carrier and wiring allow it.
Support validated fax and secondary-server continuity workflows.
Best for: branch offices and migration projects connecting 8 compatible analogue trunk lines plus one local analogue endpoint to SIP.
| DigiPhone SKU | HT881 |
|---|---|
| Product type | Hybrid FXO/FXS analogue VoIP gateway |
| FXO ports | 8 × RJ11 for compatible analogue lines |
| FXS ports | 1 × RJ11 for analogue endpoint |
| SIP profiles | 3 |
| Ethernet | 2 × 10/100/1000 Mbps Gigabit RJ45 |
| PoE | IEEE 802.3af PoE-PD on one network port |
| Throughput | Up to 1000 Mbps bridge mode; up to 100 Mbps NAT mode |
| Routing | High-performance NAT router |
| Lifeline | Hard relay from FXS to FXO on power loss |
| Fax | T.38 Group 3 up to 14.4 kbps and G.711 pass-through |
| Conference | 3-way voice conference per port |
| Provisioning | TR-069 and supported secure automated provisioning |
| SIP resilience | Automatic secondary-server failover |
| Security | AES encryption and unique security certificate per unit |
| Manufacturer warranty | 1-year Grandstream manufacturer warranty |
Compatibility note: Confirm FXO/FXS roles, carrier and NBN services, caller ID, fax, PBX, emergency calling, lifeline testing, PoE, network mode and firmware.
| SKU | HT881 |
| Barcode # | 6947273704782 |
| Brand | GRANDSTREAM |
| Shipping Weight | 1.0000kg |
This DigiPhone listing is supplied as an Australian version and is covered by a one-year Grandstream manufacturer warranty in Australia, subject to Grandstreams terms for this exact product. Warranty service is subject to the manufacturers terms and proof-of-purchase requirements.
Your rights under this warranty are in addition to rights available under the Australian Consumer Law. Keep your DigiPhone invoice and product serial number for any claim.
Bulk and project support: For fleet deployments, spare units or warranty planning, contact DigiPhone with the SKU and required quantity.
Grandstream • SKU HT881
A hybrid analogue gateway with 8 FXO trunk ports, one FXS endpoint port, dual Gigabit Ethernet, PoE-PD and a high-performance NAT router.
The Grandstream HT881 connects 8 compatible analogue PSTN/FXO lines to a SIP platform and also provides one FXS port for an analogue endpoint. It supports three SIP profiles, dual Gigabit Ethernet, 802.3af PoE-PD on one network port, high-performance NAT, three-way conferencing per port, T.38 fax, TR-069 provisioning and secondary SIP-server failover. A hard relay can connect the FXS port to an FXO line during a power outage when the carrier service and wiring are compatible.
Quick answer: Choose HT881 when the project requires exactly 8 FXO analogue trunk ports plus one FXS endpoint port. The two interface types are not interchangeable, and the gateway does not create a carrier or PSTN service.
Bring 8 compatible analogue trunk lines and one analogue endpoint into a supported SIP design.
Use dual Gigabit networking and 802.3af PoE-PD on the supported port in a planned network.
Hard-relay the FXS endpoint to an FXO line during power loss when the full service design supports it.
A quick fit check for Australian businesses comparing equipment for users, rooms, sites or wider projects.
| Exact model | HT881 |
|---|---|
| Telephone ports | 8 × FXO plus 1 × FXS |
| SIP profiles | 3 |
| Network | 2 × Gigabit RJ45; one supports 802.3af PoE-PD |
| Network performance | Up to 1 Gbps bridge / 100 Mbps NAT, as specified |
| Warranty | 1-year Grandstream manufacturer warranty |
It provides 8 RJ11 FXO ports for compatible analogue trunk lines.
It includes one RJ11 FXS port for a compatible analogue phone or fax endpoint.
FXO connects a compatible analogue carrier line; FXS supplies an analogue endpoint such as a phone or fax device.
Yes. One of the two Gigabit network ports supports IEEE 802.3af PoE-PD.
A hard relay can connect the FXS endpoint to an FXO line when the wiring and carrier service are compatible.
No. Emergency calling depends on the carrier, NBN equipment, wiring and power design and must be tested.
Yes. It supports T.38 and automatic G.711 fax pass-through, subject to end-to-end compatibility.
Yes. Provide the line services, PBX, fax use, network, emergency-calling plan, sites and quantity.
This DigiPhone listing is supplied as an Australian version and is covered by a one-year Grandstream manufacturer warranty in Australia, subject to Grandstreams terms for this exact product. Warranty service is subject to the manufacturers terms and proof-of-purchase requirements.
Your rights under this warranty are in addition to rights available under the Australian Consumer Law. Keep your DigiPhone invoice and product serial number for any claim.
Bulk and project support: For fleet deployments, spare units or warranty planning, contact DigiPhone with the SKU and required quantity.
Connect up to 8 supported analogue carrier lines to a SIP environment.
Retain one compatible analogue phone or fax endpoint locally.
Use bridge or NAT mode within the documented performance limits.
Power the gateway from a compatible 802.3af network port where approved.
Create the supported physical fallback path when the carrier and wiring allow it.
Support validated fax and secondary-server continuity workflows.
Best for: branch offices and migration projects connecting 8 compatible analogue trunk lines plus one local analogue endpoint to SIP.
| DigiPhone SKU | HT881 |
|---|---|
| Product type | Hybrid FXO/FXS analogue VoIP gateway |
| FXO ports | 8 × RJ11 for compatible analogue lines |
| FXS ports | 1 × RJ11 for analogue endpoint |
| SIP profiles | 3 |
| Ethernet | 2 × 10/100/1000 Mbps Gigabit RJ45 |
| PoE | IEEE 802.3af PoE-PD on one network port |
| Throughput | Up to 1000 Mbps bridge mode; up to 100 Mbps NAT mode |
| Routing | High-performance NAT router |
| Lifeline | Hard relay from FXS to FXO on power loss |
| Fax | T.38 Group 3 up to 14.4 kbps and G.711 pass-through |
| Conference | 3-way voice conference per port |
| Provisioning | TR-069 and supported secure automated provisioning |
| SIP resilience | Automatic secondary-server failover |
| Security | AES encryption and unique security certificate per unit |
| Manufacturer warranty | 1-year Grandstream manufacturer warranty |
Compatibility note: Confirm FXO/FXS roles, carrier and NBN services, caller ID, fax, PBX, emergency calling, lifeline testing, PoE, network mode and firmware.
| SKU | HT881 |
| Barcode # | 6947273704782 |
| Brand | GRANDSTREAM |
| Shipping Weight | 1.0000kg |
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