The GSC3506 V2 is a multicast paging speaker that provides a powerful paging and public address solution to expand security and communication throughout offices, schools, hospitals, apartments, and more. This high-performance SIP speaker offers crystal clear HD audio thanks to a high-fidelity 30-watt HD speaker. The GSC3506 V2 supports SIP and multicast paging, group paging, push-to-talk (PTT), and offers built-in whitelists, blacklists, and greylists to easily block unwanted calls. Thanks to a sleek design, powerful HD speaker, flexible integrations, and advanced features, the GSC3506 V2 allows users to create a state-of-the-art security and paging solution for any setting.