The Grandstream GSC3505 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 8-Watt HD speaker. The GSC3505 supports Bluetooth devices, a built-in whitelist and blacklists to easily block unwanted calls, SIP and multicast paging, and integrated dual-band WiFi.

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

Integrated dual-band 802.11 a/b/g/n WiFi and Bluetooth

One 10/100Mbps network port with PoE/ PoE+