Grandstream GSC3516

Product description

Grandstream GSC3516

The GSC3516 is a SIP / multicast loudspeaker designed for professional intercom and building communication solutions. This robust device combines a powerful 15-watt HD audio output with advanced 4-microphone technology, enabling exceptionally clear, bidirectional voice communication.

Advanced audio and microphone technology

The GSC3516 features a full-duplex loudspeaker with an HD acoustic chamber and advanced echo cancellation, ensuring natural conversations without distortion. With 15 W output and a sensitivity of 90 dB across a frequency range of 110 to 20,000 Hz, it delivers clear and balanced sound reproduction.

Equipped with three directional microphones using MMAD technology (multi-microphone array with directional beamforming) as well as one additional omnidirectional auxiliary microphone, the system offers a pickup range of up to 4.2 m. Background noise and echo are effectively filtered out.

With support for fullband and wideband audio codecs, including Opus and G.722, the GSC3516 delivers excellent voice quality – even in unstable network conditions or demanding use cases.

Flexible connectivity options

The loudspeaker supports both wired and wireless connectivity. Via the RJ-45 port (10/100 Mbps with PoE / PoE+), it connects directly to the network without the need for a separate power supply. Alternatively, the device can be integrated wirelessly via dual-band Wi-Fi (2.4 & 5 GHz) or Bluetooth 5.0.

The 2-pin multi-function input allows the connection of external devices such as call buttons or sensors, making integration into existing infrastructure simple and flexible.

Practical use cases

In office environments, the GSC3516 serves as a reliable public address system and hands-free intercom. Meeting rooms benefit from full-duplex communication for natural, interruption-free conversations. Thanks to its wall-mountable design with an elegant white finish, the device blends discreetly into any setting.

In industrial facilities and warehouses, the GSC3516 supports emergency communication and staff coordination. Its wide microphone pickup range and robust construction ensure reliable operation, even in demanding environments.

Schools, hospitals and retail spaces benefit from high-quality audio transmission and versatile installation options. Seamless integration into existing SIP and multicast networks allows for easy expansion or system upgrades.

Technical specifications: