The Grandstream HT813 is a hybrid analog telephone adapter (ATA) that bridges your existing analog phones and PSTN line with your VoIP network, giving offices an affordable way to bring old analog equipment onto a modern phone system, with built-in PSTN backup for reliability.
- 1 FXS port to connect an analog telephone to your VoIP service
- 1 FXO port for direct connection to a PSTN line, enabling backup lifeline support during internet or power outages
- Supports 2 SIP profiles across the FXS and FXO ports for flexible call routing
- Route Call to PSTN feature lets you configure specific numbers (e.g. emergency calls) to fall back to the PSTN line automatically
- HD voice quality with advanced VoIP functionality
- High-end security protection with AES encryption and T.38 fax support
- Multiple auto-provisioning options for easy deployment and management, including GDMS (Grandstream Device Management System)
- Ultra-compact, space-saving design
A practical choice for businesses migrating to VoIP that still rely on analog phones, fax machines, or need PSTN failover for critical calls.
Migrating your office to VoIP? Gerizon Technologies can help you plan and deploy your full phone system, including ATAs like the HT813, talk to us.
