3 Best FXO FXS Gateways Under $100 (2026)

Finding an FXO and FXS hybrid gateway under $100 means balancing line support with built-in Ethernet routing ports. These three handle simultaneous analog line bridging and local network pass-through differently.

Best for someone setting up a home office who needs to bridge an analog telephone line into an FXO port while keeping an active Ethernet pass-through for a computer.

Picked by QuickPick's AI from current retailer listings · Last reviewed September 8, 2026

1. Grandstream HT813

$75

Estimated Starting Price

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This gateway is an ideal fit for your specific wiring and VoIP routing setup, providing both the required FXO and FXS ports alongside a dedicated network connection.

Key Features

1 FXS analog telephone port and 1 FXO telephone line port
1 10/100/1000Mbps Ethernet port
Supports T.38 Fax and SIP provisioning

Full Description

The Grandstream HT813 is an analog telephone adapter (ATA) featuring 1 FXS port and 1 FXO port, along with a single 10/100Mbps Ethernet port. Designed for seamless integration between analog devices and VoIP networks, it allows users to connect both a traditional analog phone and a PSTN lifeline. Powered by Grandstream's advanced SIP ATA/gateway technology, the device boasts exceptional voice quality, automated provisioning, and robust security encryption. It supports up to 2 SIP profiles through its FXS port and FXO lifeline port, making it ideal for residential and small office environments. The HT813 is compact, reliable, and engineered for easy deployment by both service providers and end-users seeking hybrid telephony solutions.

Comparison Table

Attribute	Grandstream HT813	Grandstream HT503	Sangoma D10
Price in USD	75	60	89
User Rating out of 5	4.4	4.1	4.5
Ethernet Port Speed	10/100/1000 Mbps Gigabit	10/100 Mbps Legacy	Standard Ethernet
Product Generation	Modern Hybrid	Legacy Predecessor	Enterprise-level
FXS Port Count	1	1	1
FXO Port Count	1	1	1
Fax Support	T.38 Fax supported	Standard analog passthrough

3. Sangoma D10

$89

Estimated Starting Price

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This gateway provides robust build quality and reliable call handling, though it sits closer to the top of your spending limit.

Key Features

Mixed FXO and FXS port configuration
Single Ethernet port for network integration
Advanced SIP routing and failover controls

Full Description

The Sangoma D10 is a specialized VoIP endpoint adapter designed to integrate traditional analog telephony equipment with modern IP-based communication systems. Featuring a combination of FXO and FXS ports alongside a single Ethernet port, it bridges the gap between legacy analog devices like standard telephones or fax machines and digital PBX environments. The device is engineered primarily for small businesses and branch offices seeking a cost-effective migration path to VoIP without completely replacing their existing analog infrastructure. Its compact form factor makes it suitable for desktop deployment or discreet placement in wiring closets. Sangoma ensures broad interoperability with their own Switchvox and FreePBX platforms, as well as various third-party SIP-based systems. Configuration and management are typically handled via an intuitive web-based GUI or centralized provisioning, simplifying deployment for IT administrators.

Additional Features

Combined FXO and FXS port configuration for analog integration
Single 10/100 Mbps Ethernet port for network connectivity
Support for standard SIP protocol for broad PBX compatibility
Web-based graphical user interface for easy configuration and management
Auto-provisioning capabilities for rapid deployment across networks
T.38 Fax over IP support for reliable fax transmissions
Comprehensive codec support including G.711, G.729, and G.726
Built-in local survivability features for continuous operation during network disruptions
Advanced caller ID presentation and generation
Robust security features including TLS and SRTP encryption for SIP signaling and media streams

3 Best FXO FXS Gateways Under $100 (2026)

1. Grandstream HT813

Key Features

Full Description

Comparison Table

Additional Features

2. Grandstream HT503

Key Features

Full Description

Additional Features

3. Sangoma D10

Key Features

Full Description

Additional Features

Summary

Which One to Pick and Why

Grandstream HT813

Grandstream HT503

Sangoma D10