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GSC3516

SIP/Multicast Talk-Back Speaker
The GSC3516 is a SIP/Multicast Talk-Back Speaker that offers 2-way voice, 15W HD speaker and 3 directional microphones with MMAD and 1 omnidirectional microphone with a 4.2 meter pickup distance.

  • 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

Grandstream Device Management System

GDMS provides a FREE centralized interface to provision, manage, monitor and troubleshoot Grandstream products, including device management, account management, device configuration, firmware upgrades, device monitoring, intelligent alarm, and statistical analysis, individually or in batches of devices by site, group and model. This powerful cloud management platform adds robust security features to protect enterprise networks, including bank-grade TLS encryption from end-to-end, two-factor login authentication to protect your data security, two-way certificate verification and encryption of all device information. By offering a centralized, secure and zero-touch management for Grandstream endpoints, GDMS is ideal for enterprises, service providers and multi-site businesses as it allows them to easily deploy and manage large networks of Grandstream solutions. Visit gdms.cloud to sign up for free today!

Android and iOS mobile users can access the GDMS mobile app from any device by downloading for free through the app store, or get it on google play.

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Related Products


  • 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+

  • 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+

  • 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