Grandstream GXW4216 v2 High-Density 16-Port FXS VoIP Gateway Gigabit, 4 SIP Profiles, SRTP/TLS, Wideband Audio

The Grandstream GXW4200 v2 Series is a range of high-density FXS VoIP gateways designed to bridge legacy analog systems with modern IP-based networks, offering a cost-effective and secure hybrid telephony solution. Grandstream GXW4216 v2 is ideal for businesses of all sizes, the series lets organizations leverage VoIP benefits while protecting investments in analog telephony infrastructure.

The Grandstream GXW4216 v2 specifically provides 16 FXS ports for connecting analog phones, fax machines, and legacy PBX systems to IP networks. It supports Gigabit speeds, ensuring fast, reliable connections for high-volume environments. This device is fully interoperable with leading IP-PBX platforms, softswitches, and SIP services, supporting up to 4 independent SIP server profiles and a unique SIP account per port.

Grandstream GXW4216 v2 is vuilt with carrier-grade security, it offers robust protection with SRTP, TLS, HTTPS, SecureBoot, and unique device certificates. Voice quality is ensured via wideband codec support (Opus, G.722), echo cancellation, dynamic jitter buffer, and 3-way conferencing per port. Integrated fax-over-IP (T.38) support allows seamless fax transmission across IP networks.

Grandstream GXW4216 v2 comes with an LCD display and multi-language GUI enable intuitive management, while multiple provisioning options simplify deployment across distributed locations.

🎯 Key Features:

• 16/24/32/48 FXS ports with RJ11 and Telco connectors (GXW4216: 16 ports)

• 1 Gigabit Ethernet port (10/100/1000Mbps auto-sensing)

• Backlit LCD display (128×32) with multi-language support

• 4 SIP server profiles per system, independent SIP account per port

• Carrier-grade security: SRTP, TLS/SIPS, HTTPS, SecureBoot, random passwords

• Wideband audio support: Opus, G.722, G.711, G.723, G.729, G.726-32, iLBC

• Fax-over-IP (T.38) with G.711 fallback

• Simultaneous 3-way voice conferencing per port

• Echo cancellation, dynamic jitter buffer, adaptive noise suppression

• QoS support: DiffServ, ToS, 802.1p/q VLAN tagging

• Flexible DTMF transmission: In-audio, RFC2833, SIP INFO

• Multiple provisioning methods: TFTP, HTTP, HTTPS, FTP, FTPS, TR-069

• Over-voltage/over-current electrical protection (ITU-T K.21 compliant)

• Universal power adapter included

• 16/24/32 FXS ports, GXW4248 includes 2 50-pin Telco connectors
• 1 Gigabit network port
• 132×48 backlit graphic display with support for multiples languages
• 4 SIP server profiles per system, independent SIP account per port
• Designed and tested for full interoperability with leading IP-PBXs, soft-switches and SIP-based environments
• Advanced security protection with SRTP/TLS/HTTPS
• Supports 16KHz wide-band voice sampling rate and wide-band codecs such as Opus and G.722
• Carrier-grade security features including secure boot, unique certificate and random default password per device, dual firmware images
• Supports simultaneous 3-way voice conferencing per port