Fanvil GA100-4T FXO VoIP Gateway – 4 RJ11 FXO Ports & Dual 10/100 Ethernet for PSTN-to-SIP Integration

Need a simple, rock-solid way to keep your existing analog phone lines while moving to modern VoIP? The Fanvil GA100-4T FXO VoIP Gateway does exactly that. With four RJ11 FXO ports and two Ethernet connections, it turns legacy PSTN lines into crystal-clear SIP calls—perfect for small businesses, branch offices, or any setup where you still rely on traditional phone lines but want the flexibility and cost savings of IP telephony. Compact, low-power, and packed with essential features like echo cancellation and secure SRTP, it’s the no-fuss bridge your team will actually use.

The Telecom Spot Take

Here’s the straight talk from our team: most customers we work with love the GA100-4T because it solves the exact pain point of “we still have these old lines but everything else is VoIP now.” Four FXO ports give you enough capacity for typical small-to-medium setups without overkill, while the dual Ethernet ports let you keep things redundant or separate voice traffic easily. Echo cancellation and polarity reversal detection keep calls clean even on older lines, and the low power draw (<2W) means it runs cool 24/7 with almost zero electricity cost. It’s built for real-world hybrid environments—think hotels, retail locations, or any business that needs reliable PSTN fallback while enjoying SIP features like auto-provisioning and centralized management. Bottom line: if you want fast deployment and rock-solid performance without complexity, this gateway is one of the smartest, most budget-friendly choices in its class.

Key Features

• 4 RJ11 FXO ports – Directly connect up to four analog PSTN lines and convert them to SIP for seamless integration with your IP-PBX or softswitch
• Dual 10/100 Mbps Ethernet ports – Gives you flexible networking options, redundancy, or easy separation of voice and data traffic
• Industry-standard voice codecs – Supports G.711A/U, G.723, G.729A/B, iLBC, and AMR so your calls sound natural and use bandwidth efficiently
• Acoustic echo cancellation & polarity reversal detection – Keeps conversations clear and reliable even on imperfect analog lines
• T.30 & T.38 fax support – Send and receive faxes over IP without extra hardware or quality loss
• SIP with SRTP encryption – Secure your calls end-to-end while staying fully compatible with major SIP platforms and IMS environments
• Easy web-based management & auto-provisioning – Configure once via browser and let HTTP/HTTPS/FTP handle the rest—IT teams save hours every month
• Caller ID (FSK/DTMF) support – Never miss important caller information from your PSTN lines

Technical Specifications

Frequently Asked Questions

1. What is the Fanvil GA100-4T best used for?

It’s ideal for any business that still has analog PSTN lines but wants to route calls through a modern SIP/VoIP system—perfect for small-to-medium offices, retail stores, hotels, or branch locations needing reliable PSTN-to-IP conversion.

2. Does it support fax over IP?

Yes—full T.30 and T.38 fax passthrough so you can keep sending and receiving important documents without dropping quality.

3. How easy is setup for an IT team?

Extremely. Web-based configuration plus auto-provisioning (HTTP/HTTPS/FTP) means you can have it online in minutes and manage it centrally going forward.

4. Will it work with my existing IP-PBX or softswitch?

It supports standard SIP (UDP/TCP/TLS) and is compatible with virtually all major platforms and IMS environments.

5. What about call quality on older phone lines?

Built-in echo cancellation and polarity reversal detection handle noisy or imperfect analog lines exceptionally well, delivering clear, professional audio every time.

6. Is it power-hungry or noisy?

Not at all. It draws less than 2W and runs completely silent—great for equipment closets or desks where space and heat are concerns.