The compact GRANDSTREAM HT813 VoIP gateway offers 1 FXS port for connecting an analog phone and 1 FXO port for a PSTN line, enabling backup emergency calling over the landline and hybrid VoIP + PSTN operation. It delivers HD voice quality, advanced VoIP features, strong security, and automatic provisioning for easy integration.
The GRANDSTREAM HT813 is an Analog Telephone Adapter (ATA) that bridges IP telephony with the traditional landline. Thanks to the combination of FXS and FXO ports, it enables both connecting an analog phone to a VoIP network and routing calls to and from the public PSTN. Ideal for homes, small offices, and service providers who want reliable PSTN backup calling.
The device stands out with HD voice quality, enhanced VoIP features, and advanced security. With support for automatic provisioning, deployment is quick and seamless. Its compact size allows discreet installation virtually anywhere, while the FXS port extends VoIP services to a single analog device.
- Hybrid operation: simultaneous use of VoIP and PSTN for flexible call routing.
- Backup calling: supports emergency calls over the PSTN line.
- Easy deployment: multiple automatic provisioning options save time during configuration.
- Security and reliability: advanced encryption and robust network protection.
Specifications
- Device type
- Analog Telephone Adapter (ATA) with FXS and FXO ports
- Ports
- 1× FXS, 1× FXO (PSTN)
- Call support
- Routing to/from the PSTN network, hybrid VoIP + PSTN
- Audio quality
- HD voice
- Features
- Advanced VoIP features, automatic provisioning
- Security
- Advanced protection and encryption
- Use cases
- Home, SOHO, service providers
- Form factor
- Compact dimensions for easy installation
