The Grandstream GXW4216 Gigabit Gateway is a high-density 16-port FXS analog VoIP gateway designed for businesses that need to integrate traditional telephony systems with modern VoIP networks. Equipped with a 50-pin Telco connector and advanced features, it delivers seamless interoperability, gigabit speeds, and robust security in a compact, scalable form.

• 16 FXS ports with 1 Gigabit Ethernet port and 50-pin Telco connector

• Supports 4 SIP server profiles and independent SIP account per port

• Wide-band audio support with Opus and G.722 codecs and 16KHz sampling

• Secure boot, unique device certificate, dual firmware images, and HTTPS/TLS/SRTP security

• Enables 3-way voice conferencing per port with full interoperability across IP-PBX and SIP systems