Grandstream GSC3516 SIP/Multicast Talk-Back Speaker with HD Audio & 3-Mic Array

One-way paging is fine for a fire drill. But when you need to talk to someone at the front desk, in the canteen, or across the corridor and hear them back, you need two-way audio that actually works. The GSC3516 gives you full-duplex talk-back with a 4.2-metre voice pickup distance, so the person on the other end doesn't have to shout. Three directional mics with beamforming pull your voice out of background noise. HD speakerphone with echo cancellation means no feedback howl when both sides talk at once. Integrate it with Grandstream IP phones, PBXs and access systems for a proper intercom setup across the site

• Full-duplex 2-way HD talk-back with 4.2 m voice pickup distance
• 3 directional microphones with MMAD and beamforming array for clear two-way audio
• Advanced acoustic echo cancellation for simultaneous talk and listen
• SIP and multicast paging, group paging, PTT with built-in call filtering (whitelist, blacklist, greylist)
• Integrated dual-band Wi-Fi 802.11 a/b/g/n and Bluetooth for flexible placement
• 10/100 Mbps network port with PoE/PoE+ and 2-pin multi-purpose input for peripherals