GSC3516 SIP Intercom Speaker & Microphone 2-Way

Grandstream GSC3516 SIP/Multicast Talk-Back Speaker with 2-Way Audio  

The GSC3516 is a powerful SIP/Multicast-enabled talk-back speaker designed for voice paging, intercom, and security applications in offices, schools, hospitals, apartments, warehouses, and more. This professional-grade device features a 15W high-definition speaker and four built-in microphones—including three directional beamforming mics with MMAD (Multichannel Microphone Array Design) and one omnidirectional mic—delivering full-duplex 2-way voice communication with a pickup range up to 4.2 metres.

Engineered for clear, hands-free communication, the GSC3516 includes advanced acoustic echo cancellation and support for wide-band and full-band audio codecs, including Opus and G.722. Its cleanable industrial design makes it suitable for high-traffic or hygienically sensitive environments.

With built-in dual-band Wi-Fi, Bluetooth, and PoE/PoE+ Ethernet connectivity, it’s easy to deploy in both new and existing network infrastructures. The speaker also supports external peripherals via a 2-pin multi-purpose input, making it ideal for use with call buttons, door sensors, and access control systems.

Whether you need reliable IP paging, two-way communication, or emergency intercom functionality, the Grandstream GSC3516 offers a scalable, smart solution that integrates easily with Grandstream IP phones and the GDS series for facility access.

Key Features:

• Full-duplex HD speakerphone with echo cancellation

• 15W HD speaker for loud, clear announcements

• 3 directional beamforming microphones (MMAD) + 1 omnidirectional mic

• 4.2m microphone pickup distance

• SIP and multicast paging support

• Dual-band 802.11 a/b/g/n/ac Wi-Fi and Bluetooth

• 10/100Mbps network port with PoE/PoE+

• Wide audio codec support including Opus and G.722

• Cleanable industrial housing, ideal for public and medical environments

• 2-pin GPIO for call buttons or peripheral input

• Seamless integration with Grandstream IP phones and access systems