telephone splitter Grandstream HT813

The HT813 is an analog telephone adapter with one FXS port for connecting an analog phone and one FXO port for connecting a PSTN line to provide backup lifeline support. This hybrid ATA enables calls to and from the PSTN line while extending VoIP service to a single analog device. The device is compact and designed to convert analog telephony to VoIP with HD voice quality, advanced VoIP features, strong security and multiple auto-provisioning options suitable for service providers and end users.

Advantages

The HT813 combines FXO and FXS functionality in a single compact unit, allowing both PSTN backup and VoIP service for one analog telephone. It supports HD voice quality, offers advanced SIP-based VoIP features, and includes robust security measures and flexible auto-provisioning to simplify deployment and management.

Key specifications

• Ports: 1 × FXS (analog telephone), 1 × FXO (PSTN line)
• Function: Hybrid ATA supporting PSTN fallback and VoIP extension to one analog device
• Audio quality: HD voice
• Provisioning: Multiple auto-provisioning options
• Security: High-end security protection for VoIP signaling and media
• Form factor: Ultra-compact

How to use

Connect an analog telephone to the FXS port and a PSTN line to the FXO port, then configure SIP account settings via the device web interface or auto-provisioning server. Verify network and codec settings, enable desired VoIP features, and test inbound and outbound calling including PSTN fallback to ensure correct operation.

Recommendations

For reliable PSTN backup and smooth migration to VoIP, use the HT813 with a stable internet connection and configure auto-provisioning where available; ensure firmware and security settings are kept up to date.