Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
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Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.

Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.

Our last trading day before the holidays is 20th December, and we will reopen on 13th January.

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Grandstream GSC3516 2-Way SIP Speaker Microphone

EAN: 6947273704287 SKU: GSC3516
Grandstream GSC3516 2-Way SIP Speaker MicrophoneGrandstream GSC3516 2-Way SIP Speaker Microphone
$399
$399$289
Free Shipping Auswide
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Full Australian Warranty
  • Express to Metro (1-3 biz days)
  • Standard to Metro (2-6 biz days)
  • Express to Non-metro (2-6 biz days)
  • Standard to Non-metro (5-20 biz days)
  • Pickup (Same or next biz day)
  • Longer ETA applies to NT, WA, NZ & US locations.
  • The above time frames are estimates only. The actual delivery time is dependent on the shipping location, shipper's processing capacity and other unforeseeable factors i.e. natural disasters, accidents etc. We cannot be held responsible for any courier-related delivery delays.
This product is discontinued
  • Out of Stock
  • Model: Grandstream GSC3516
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GSC3516 SIP/Multicast Talk-Back Speaker with 2-way voice functionality

The GSC3516 is a robust SIP intercom device that provides 2-way voice functionality and a 15W HD speaker with 3 directional microphones and 1 omnidirectional auxiliary microphone for a 4.2 meter pickup distance. With a wide range of peripherals, dual-band Wi-Fi, and advanced echo cancellation, it allows for powerful voice intercom solutions in various settings. The GSC3516 can be paired with other Grandstream devices to create a state-of-the-art security and voice intercom solution, and its modern design and rich features make it suitable 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


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