Grandstream GSC3516 SIP/Multicast Talk‑Back Speaker
The Grandstream GSC3516 is a versatile SIP/Multicast talk‑back speaker with a 15 W high‑fidelity HD speaker, multi‑mic array for clear two‑way voice, integrated dual‑band Wi‑Fi and Bluetooth, PoE/PoE+ support, and peripheral input — ideal for intercom, paging, and voice communication in offices, schools, hospitals, and smart buildings.
Description
Grandstream GSC3516 — SIP/Multicast Two‑Way Talk‑Back Speaker with 15W HD Audio
Key Features:
15 W HD Speaker: High‑fidelity speaker with full‑duplex capability and advanced acoustic echo cancellation.
Multi‑Microphone Array: 3 directional mics with Multichannel Microphone Array Design (MMAD) and 1 omnidirectional auxiliary mic for up to 4.2 m voice pickup.
Two‑Way Talk‑Back: Full‑duplex speakerphone supports interactive SIP communication and talk‑back intercom use cases.
Wide Codec Support: Full‑band and wide‑band audio codecs including Opus and G.722 for rich voice quality.
Integrated Wi‑Fi & Bluetooth: Dual‑band Wi‑Fi (2.4 GHz/5 GHz) and Bluetooth connectivity for flexible deployment without relying solely on wired networks.
PoE/PoE+ Powered: Supports PoE (802.3af) and PoE+ (802.3at) over a 10/100 Mbps port for simplified wiring and power delivery.
Peripheral Input: 2‑pin multi‑purpose input supports accessories like call buttons or sensors.
Paging & Group Features: Works with SIP paging, multicast paging groups, push‑to‑talk, and more for mass communication.
Robust Design: Rugged industrial housing suitable for both indoor and semi‑exposed installations.
Central Management: Provisioning, firmware updates, and monitoring via GDMS or TR‑069.
Hardware & Technical Specs:
Speaker Power: 15 W high‑fidelity HD audio.
Microphones:
3 x directional with MMAD & beamforming
1 x omnidirectional auxiliary mic
Pickup distance: ~4.2 m.
Wireless: Dual‑band 802.11 a/b/g/n/ac Wi‑Fi; Bluetooth.
Network: 1 × 10/100 Mbps RJ45 (PoE/PoE+).
Audio Codecs: Opus, G.722, G.711, G.726, iLBC, G.729 (varies by platform support).
Paging: SIP paging, multicast paging, group paging, PTT (varies by firmware/config).
Auxiliary Input: 2‑pin multi‑purpose port for peripherals.
Protocol Support: SIP (RFC3261), TCP/IP, UDP, RTP/RTCP; secure SIP with TLS/SRTP.
Management: GDMS cloud/on‑premise, TR‑069, HTTP/HTTPS/TFTP provisioning.
Physical: Diameter ~257 mm × Depth ~68.5 mm; Weight ~0.92 kg.
Mounting: Wall/ceiling mountable (kits included).
Technical Datasheet
You can download the full technical documentation for this product from the link below:
Download PDF Datasheet
