Description
The Poly ATA 400 (8F3H4AA#ABA) is a single-port FXS analog telephone adapter that connects a standard analog phone or fax machine to a SIP-based VoIP network — the simplest path to bringing legacy analog devices into a modern IP telephony infrastructure. Open SIP compatibility makes it deployable on any SIP-based UC platform, and T.38 support ensures reliable fax transmission over IP. A power supply is included for immediate deployment.
The Telecom Spot Take
The ATA 400 is the right tool for organizations migrating from traditional PSTN telephony to SIP/VoIP who have specific analog devices that can't be replaced immediately — conference room analog phones, fax machines, lobby phones, or legacy analog equipment connected to door entry systems. One FXS port means one analog device per unit; for two devices, the ATA 402 (8F3H5AA#ABA) is the two-port upgrade. Poly's PDMS-SP cloud management enables centralized configuration and monitoring of deployed ATA units without requiring on-site access to each device.
Key Features
- 1 FXS Port: Connects one analog phone or fax machine to a SIP VoIP network.
- Open SIP: Compatible with Cisco, Avaya, 3CX, RingCentral, Zoom Phone, and virtually any SIP-based platform.
- T.38 Fax Support: Reliable fax-over-IP for analog fax machines — not just voice.
- Power Supply Included: Ready to deploy immediately with no additional hardware.
- Poly PDMS-SP Cloud Management: Centralized provisioning and monitoring without on-site visits.
Technical Specifications
| Specification | Detail |
|---|---|
| HP SKU | 8F3H4AA#ABA |
| FXS Ports | 1 (RJ-11) |
| Protocol | Open SIP |
| Fax Support | T.38 |
| Network | RJ-45 Ethernet |
| Power | AC adapter included (5V 1A) |
| Management | Poly PDMS-SP cloud management |
Frequently Asked Questions
- What is an FXS port?
- FXS (Foreign eXchange Subscriber) is the interface that provides dial tone and ring voltage to a standard analog phone or fax machine — it is what the analog device plugs into. The ATA 400 has one FXS port, meaning it can connect one analog device to the VoIP network.
- What is the difference between the ATA 400 and the ATA 402?
- The ATA 400 has one FXS port for one analog device; the ATA 402 (8F3H5AA#ABA) has two FXS ports for two analog devices. Both are otherwise identical in protocol support and management.