Grandstream GSC3516 SIP Speaker – 15W HD Talk-Back, PoE, WiFi, Multicast Paging Speaker
The GSC3516 is a SIP/multicast talk-back speaker with 15W HD audio, beamforming microphones, PoE, and WiFi for enterprise paging and intercom systems.
Description
The Grandstream GSC3516 — SIP/Multicast Talk-Back Speaker is a powerful enterprise communication device designed for public address systems, intercom solutions, and real-time voice communication across business and security environments.
This device combines a high-fidelity 15W HD speaker with advanced microphone technology to deliver full-duplex two-way audio communication, making it ideal for environments such as schools, hospitals, offices, warehouses, and smart buildings.
The GSC3516 features an advanced microphone array system, including three directional microphones with beamforming technology and one omnidirectional microphone, providing a voice pickup range of up to 4.2 meters. This ensures clear voice capture even in noisy environments.
Designed for modern enterprise networks, the device supports:
- SIP paging and multicast paging
- Push-to-talk (PTT) communication
- Group paging and priority override
- Full-band and wideband codecs (Opus, G.722)
These features allow seamless integration with VoIP systems, IP phones, and unified communication platforms.
Connectivity is highly flexible with:
- Dual-band Wi-Fi (802.11 a/b/g/n/ac)
- Bluetooth support
- 1 × 10/100 Mbps Ethernet port with PoE/PoE+
This enables both wired and wireless deployment, making installation simple and scalable.
The GSC3516 also includes advanced acoustic echo cancellation and noise suppression, ensuring clear and natural audio during announcements or conversations.
For integration with external systems, it features a 2-pin multi-purpose input port, allowing connection to devices such as call buttons, alarm systems, or sensors.
Security is enterprise-grade with:
- TLS / SRTP encryption
- 802.1X network authentication
- Secure boot and encrypted configuration files
With its combination of HD audio performance, two-way communication, flexible deployment, and enterprise security, the Grandstream GSC3516 SIP Speaker is an ideal solution for modern paging, intercom, and voice notification systems.
General
- Model: GSC3516
- Type: SIP / Multicast Talk-Back Speaker
- Audio Output: 15W HD speaker
Audio & Microphones
- Full-duplex speakerphone
- 3 directional microphones (beamforming)
- 1 omnidirectional auxiliary microphone
- Voice pickup range: up to 4.2 meters
Network & Connectivity
- 1 × 10/100 Mbps Ethernet port
- PoE / PoE+ support
- Dual-band Wi-Fi (802.11 a/b/g/n/ac)
- Bluetooth support
Telephony Features
- SIP paging
- Multicast paging
- Group paging
- Push-to-Talk (PTT)
- Call priority override
Audio Codecs
- Opus
- G.722
- Wideband & full-band codec support
Interfaces
- 2-pin multi-purpose input (call buttons, alarms)
Security Features
- TLS / SRTP encryption
- Secure boot
- 802.1X authentication
- Encrypted configuration files
Design
- Wall or ceiling mount installation
- Industrial cleanable surface
- Compact enterprise design
Use Cases
- Public address (PA) systems
- School and campus announcements
- Hospital communication systems
- Warehouse and industrial paging
- Office intercom systems
- Security and emergency alerts
Technical Datasheet
You can download the full technical documentation for this product from the link below:
Download PDF Datasheet
