The GSC3506 is a 1-way public address SIP speaker that allows offices, schools, hospitals, apartments, and more to build powerful public address announcement solutions that expand security and communication. This robust SIP speaker offers crystal clear HD audio functionality with a high-fidelity 30-Watt HD speaker. The GSC3506 support built-in whitelists, blacklists, and greylists to easily block unwanted calls, SIP and multicast paging, group paging, and PTT. The users can easily sculpt a state-of-the-art security and PA announcement solution. Thanks to its modern industrial design and rich features, the GSC3506 is the ideal SIP speaker for any setting. Speaker with HD acoustic chamber Features SIP paging, multicast paging, call-waiting with priority override Full-band and wide-band audio codec support including Opus & G.722 1x 2-pin switch-in input port, 1x Alarm-in input port, vol+/- Key, reset, 1x network port, 1x USB port One 10/100Mbps network port with PoE/ PoE+

The GSC3516 is a SIP/Multicast Talk-Back Speaker that allows offices, schools, hospitals, apartments and more to build powerful voice intercom solutions that expand security and communication. This robust SIP intercom device offers 2-way voice functionality with both a high-fidelity 15W HD speaker and 3 directional microphones with Multichannel Microphone Array Design (MMAD) an d 1 omnidirectional auxiliary microphone that offer a 4.2 meter pickup distance. The GSC3516 supports a wide-range of peripherals including Bluetooth devices, built-in whitelists, blacklists and greylists to easily block unwanted calls, integrated dual-band Wi-Fi and advanced acoustic echo cancellation. By pairing the GSC3516 with other Grandstream devices, including desktop and cordless IP phones a s well as the GDS series of Facility Access products, users can easily sculpt a state-of-the-art security a nd voice intercom solution. Thanks to it’s modern industrial design, cleanable exterior surface and rich features, the GSC3516 is the ideal intercom speaker/microphone for any setting. Full-duplex speakerphone with HD acoustic chamber, advanced acoustic echo cancellation 3 directional mics with MMAD & microphone beamforming array and 1 omnidirectional auxiliary microphone Full-band and wide-band audio codec support including Opus & G.722 Integrated dual-band 802.11 a/b/g/n/ac Wi-Fi and Bluetooth One 10/100Mbps network port with PoE/PoE+ 2-pin multi-purpose input to support peripherals including call buttons.

This robust SIP intercom device offers 2-way voice functionality with both a high-fidelity 8W HD speaker and 3 directional microphones with Multichannel Microphone Array Design (MMAD) that offer a 4.2 meter pickup distance. The GSC3510 supports a wide-range of peripherals including Bluetooth devices, built-in whitelist and blacklists to easily block unwanted calls, integrated dual-band Wi-Fi and advanced acoustic echo cancellation. By pairing the GSC3510 with other Grandstream devices, including desktop and cordless IP phones as well as the GDS series of Facility Access products, users can easily sculpt a state-of-the-art security and voice intercom solution. Thanks to it’s modern industrial design and rich features, the GSC3510 is the ideal intercom speaker/microphone for any setting. Full-duplex speakerphone with HD acoustic chamber, advanced acoustic echo cancellation 3 directional mics with MMAD & microphone beamforming array Full-band and wide-band audio codec support including Opus & G.722 Integrated dual-band 802.11 a/b/g/n Wi-Fi and Bluetooth One 10/100Mbps network port with PoE/ PoE+ 2-pin multi-purpose input to support peripherals including call buttons

This robust SIP speaker offers crystal clear HD audio functionality with a high-fidelity 8-Watt HD speaker. The GSC3505 supports Bluetooth devices, a built-in whitelist and blacklists to easily block unwanted calls, SIP and multicast paging, and integrated dual-band Wi-Fi. By pairing the GSC3505 with other Grandstream devices, including desktop and cordless IP phones as well as the GDS series of Facility Access products, users can easily sculpt state-of-the-art security and PA announcement solutions. Thanks to its modern industrial design and rich features, the GSC3505 is the ideal SIP speaker for any setting. Speaker with HD acoustic chamber Features SIP paging, multicast paging, callwaiting with priority override Full-band and wide-band audio codec support including Opus & G.722 Integrated dual-band 802.11 a/b/g/n Wi-Fi and Bluetooth One 10/100Mbps network port with PoE/ PoE+.