Grandstream GSC3506

SIP/Multicast Intercom Speaker

The Grandstream GSC3506 SIP/Multicast Talk-Back Speaker is made to offer state of art modern features to address the public in a large place through announcements. It consists of 1-way voice functionality with a high-fidelity 30W HD speaker for crystal clear HD audio delivery. GSC3506 is a product that provides high security and secure communication.

The GSC3506 comes with the latest features for powerful announcement channels for schools, hospitals, apartments and shopping centres. It has built-in features like whitelists, blacklists and greylists to easily control and block unwanted calls. This speaker is a must-have device for organizations to pass information quickly through announcements.

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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. 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+

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