{"product_id":"gsc3516","title":"GSC3516","description":"\u003cp\u003eThe \u003cstrong\u003eGrandstream GSC3516\u003c\/strong\u003e is a professional \u003cstrong\u003eSIP\/Multicast Talk-Back Speaker\u003c\/strong\u003e designed to provide reliable two-way voice communication, intercom, paging, and security solutions for offices, schools, hospitals, apartment buildings, retail stores, and other commercial environments.\u003c\/p\u003e\n\u003cp\u003eThe GSC3516 combines a \u003cstrong\u003e15W high-fidelity HD speaker\u003c\/strong\u003e with \u003cstrong\u003e3 directional microphones featuring Multichannel Microphone Array Design (MMAD) and beamforming\u003c\/strong\u003e, along with an omnidirectional auxiliary microphone. This provides a microphone pickup distance of up to \u003cstrong\u003e4.2 meters\u003c\/strong\u003e and enables clear two-way communication with advanced acoustic echo cancellation.\u003c\/p\u003e\n\u003cp\u003eThe device supports \u003cstrong\u003eSIP, multicast paging, group paging, Push-to-Talk (PTT)\u003c\/strong\u003e, and call waiting with priority override. It also features integrated \u003cstrong\u003edual-band Wi-Fi and Bluetooth\u003c\/strong\u003e, providing flexible wireless connectivity alongside its PoE\/PoE+ Ethernet interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSIP\/Multicast Talk-Back Speaker with \u003cstrong\u003e2-way voice functionality\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e15W high-fidelity HD speaker\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e3 × directional microphones with \u003cstrong\u003eMMAD and beamforming\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 × omnidirectional auxiliary microphone.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMicrophone pickup distance up to \u003cstrong\u003e4.2 meters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFull-duplex speakerphone with HD acoustic chamber.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdvanced acoustic echo cancellation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports full-band and wide-band audio codecs including \u003cstrong\u003eOpus and G.722\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated dual-band \u003cstrong\u003e2.4GHz and 5GHz Wi-Fi\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated \u003cstrong\u003eBluetooth\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 × 10\/100Mbps Ethernet port with \u003cstrong\u003ePoE\/PoE+\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports \u003cstrong\u003eSIP Paging and Multicast Paging\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports Group Paging and \u003cstrong\u003ePush-to-Talk (PTT)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCall waiting with priority override.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2-pin multi-purpose input for peripherals such as call buttons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports advanced voice features including AEC, AGC, noise suppression, packet loss concealment, and adaptive jitter buffering.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports \u003cstrong\u003eTLS and SRTP\u003c\/strong\u003e for secure communications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports VLAN and QoS for optimized voice traffic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports centralized provisioning and management through \u003cstrong\u003eGDMS\/TR-069\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports whitelist, blacklist, and greylist functions for call control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModern, cleanable design suitable for professional environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCorporate offices and business facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSchools and educational institutions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHospitals and healthcare facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApartment buildings and residential complexes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRetail stores and commercial spaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSecurity and reception areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePublic address and paging systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSIP-based intercom deployments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEmergency and two-way communication systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eGrandstream GSC3516\u003c\/strong\u003e provides a powerful combination of \u003cstrong\u003eHD two-way audio, SIP intercom, multicast paging, Wi-Fi, Bluetooth, and PoE\/PoE+ connectivity\u003c\/strong\u003e, making it an ideal solution for modern communication, security, and facility management systems.\u003c\/p\u003e","brand":"Grandstream","offers":[{"title":"Default Title","offer_id":48467942670548,"sku":null,"price":12000.0,"currency_code":"EGP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1118\/5876\/files\/images_47.jpg?v=1786626761","url":"https:\/\/homtech.online\/products\/gsc3516","provider":"HOM Technology","version":"1.0","type":"link"}