GXW4216

Here’s a comprehensive summary of the Grandstream GXW4216—a 16-port analog-to‑VoIP gateway:

 Core Features & Specs

• Analog Interfaces:

  • 16 FXS ports via RJ11 jacks plus a 50‑pin Telco connector, complete with per-port LEDs 

• Network Connectivity:

  • 1 × Gigabit Ethernet RJ45 (10/100/1000 Mbps, auto-sensing) 

• Display:

  • Backlit graphic LCD (128×32 for v1, possibly 132×48 on v2), supporting multiple languages 

• Voice & Fax Codecs:

  • G.711, G.723.1, G.726-32, G.729 A/B, iLBC, G.722, and Opus (v2 only).

  • T.38 fax relay with G.711 fallback 

• Telephony Features:

  • Caller ID, call waiting/transfer/forward, DND, message waiting indication (VMWI/NEON), flexible dial plans, echo cancellation (G.168), jitter buffer, and local 3‑way conferencing per port on v2 

• Provisioning & SIP Profiles:

  • Supports 4 SIP server profiles and individual SIP account per port.

  • Provisioning via TR‑069, XML/HTTP/HTTPS/TFTP 

• Security:

  • TLS/SRTP, HTTPS, secure boot, unique per-device certificates, dual-firmware images, and random default passwords (v2) 

• Power & Protection:

  • External PSU (12 V DC @ 5 A); built-in over-voltage/current protection meeting ITU‑T K.21 

• Form Factor:

  • 1 U rackable desktop-style unit (440 × 185 × 44 mm), weighing ~2.4 kg (unit), 3.4 kg (packaged) .