Grandstream Handytone 488 Telephone Adapter ( Datasheet) (User Manual)
All-In-1 VoIP IAD Built-in Router, NAT and Gateway 1 FXO Gateway 1 FXS Port Compact, Lightweight and Highly Affordable
Typical Application of a HandyTone-488
Comprehensive HandyTone Series comparison table
* FXO port allows local and remote PSTN-to-VoIP call origination and VoIP-to-PSTN call termination, automated call routing through PSTN, and power fail-over. PSTN Pass-through allows local PSTN line service for income/outbound call and failover.