Description
Stay connected and save money by reusing your existing analog phones and fax machines with the Poly ATA 402 2FXS Voice Port VoIP Adapter. This powerful little device bridges your legacy equipment to any SIP-based VoIP service, giving you modern calling features without the cost or disruption of replacing your entire phone system. Whether you need to keep a few analog extensions alive or send faxes over the internet, the ATA 402 makes the transition simple, reliable, and future-proof.
The Telecom Spot Expert Review
In our experience helping businesses move to cloud VoIP, the Poly ATA 402 stands out as one of the smartest, most flexible analog adapters on the market. Its open SIP compatibility means it works with virtually any provider, and the two FXS ports plus optional Wi-Fi USB support give you deployment options most other adapters simply don’t offer. We especially love how it keeps T.38 fax working flawlessly—perfect for medical offices, legal teams, or any business that still relies on fax. Compact enough to hide behind a desk, yet packed with enterprise-grade management tools through Poly’s PDMS-SP platform, this adapter is a no-brainer for cost-conscious IT teams who want maximum flexibility and zero headaches.
Key Features
- Connect up to two analog phones or fax machines to your SIP VoIP service instantly
- Full T.38 fax support so your existing fax machines keep working over the internet
- Open SIP compatibility works with any internet telephone service provider (ITSP)
- Optional Wi-Fi connectivity via USB port – no Ethernet jack required
- Legendary Poly audio quality for crystal-clear voice calls every time
- Easy cloud management with Poly Device Management Service (PDMS-SP) and real-time API monitoring
- Supports Microsoft Teams SIP Gateway and is Zoom certified for seamless platform integration
- Simple plug-and-play setup with included power supply and Ethernet cable
- Compact design fits anywhere – ideal for desks, wall mounts, or tight spaces
Technical Specifications
| Specification | Details |
|---|---|
| Ports | 2 × RJ-11 (FXS), 1 × RJ-45 (Ethernet), 1 × USB 2.0 Type-A |
| VoIP Protocols | Open SIP (SIPv2), up to 4 service provider profiles |
| Audio Codecs | OPUS, G.711 (A-law, 64 kbps) |
| Fax | T.38 protocol support |
| Power | External universal AC adapter (5V 1A DC, 100–240 VAC) – included |
| Dimensions (W × D × H) | 9.6 × 9.6 × 2.2 cm |
| Weight | 85 g |
| Operating Temperature | 0 to 40°C |
| Security | HTTPS secure provisioning, IVR password protection |
| Certifications | FCC Part 15 Class B, CE, Zoom certified |
| Management | Poly Device Management Service for Service Providers (PDMS-SP) |