
High Performance 4 8 FXS Ports 18 Channels SIP VoIP Gateway. 18 Simultaneous Channels: Supports 18 concurrent calls for smooth multi-user communication. Flexible FXS Ports: Configurable with 4 to 8 FXS ports for analog telephone connections. Built-in VPN Security: Ensures secure remote business communication with integrated VPN. SIP Protocol Compatibility: High compatibility with mainstream IP PBX systems via SIP design. Compact Lightweight Design: Ultra-compact dimensions (221x150x32mm) save office space. 12-Month Full Warranty: Covers 100% factory inspection and 12-month full unit warranty. Free Usage Guides: Includes free manual and installation videos for easy setup. Flexible Customization: Offers full customization, minor customization, and sample-based options.