The Grandstream Speaker GSC3516 is a robust SIP/Multicast talk-back intercom speaker that facilitates two-way voice communication in various environments, including offices, schools, hospitals, and apartment complexes.

Equipped with a high-fidelity 15W HD speaker, this unit also features an advanced microphone system with three directional microphones combined with an omnidirectional auxiliary microphone. This design provides an effective voice pickup range of 4.2 meters.

In terms of audio quality, the GSC3516 supports full-duplex speakerphone functionality with an HD acoustic chamber and advanced acoustic echo cancellation. This ensures clear audio quality in every conversation.

Key Specifications:

• Speaker Power: 15 Watts HD speaker
• Microphones: 3 directional mics with MMAD + 1 omnidirectional auxiliary mic
• Voice Pickup Distance: Up to 4.2 meters
• Audio Features: Full-duplex speakerphone, HD acoustic chamber, advanced acoustic echo cancellation
• Audio Codecs: Opus, G.722 (full-band and wide-band)
• Network Interfaces: 1 x 10/100Mbps Ethernet port (PoE/PoE+)
• Wireless Connectivity: Dual-band Wi-Fi 802.11 a/b/g/n/ac, Bluetooth
• Peripherals: 2-pin multi-purpose input for call buttons
• Weight: 3.77 lbs (approx. 1.71 kg)
• Dimensions: 12.4 × 12.03 × 4 inches (approx. 315 × 305 × 102 mm)
• Use Cases: Offices, schools, hospitals, apartments, general PA and intercom systems

Ideal for secure and clear voice communication in both professional and public environments, this device supports standard SIP calls and multicast announcements while offering versatility through its wireless and wired connectivity options.