Grandstream SIP/Speaker GSC3516
- Full-duplex Speakerphone, Advanced Acoustic echo Cancellation
- Directional Mics with MMAD, 1 Omnidirectional Auxiliary Microphone
- 802.11 a/b/g/n/ac Wi-Fi and Bluetooth, 10/100Mbps Network Port with +PoE/PoE
- 15-watt maximum output speaker
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