Edit Product Description Save and continue editing Save changes Sku LS Description <h1 style='color:#3e60ac;text-align:center;font-family:arial;margin: -5px 0px'>One way SIP Interncom Speaker</h1> <h2 style='color:#46a8ca;text-align:center;font-family:arial;margin: -20px 0px'>Grandstream GSC3506</h2><div style='text-align:justify;'> 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. <div> Features - Speaker with HD acoustic chamber - SIP paging, multicast paging, group paging, PTT, 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+ <div style='text-align:center;'> <div> Alloy Description Alloy Short Description Alloy Features & Benefits MMT Description DS Description DS Features HTML Icecat Description Icecat Short Description Icecat Features Icecat Specifications Icecat Middle Description Icecat Long Summary Are you sure you want to %action_name%?