Fast dispatch and helpful advice before we placed a multi-site order. Pricing was clear and the product arrived ready for install.
Wesley G.
Grandstream GSC3516 SIP Intercom Speaker
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£175.00
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**Product Overview**
The **Grandstream** **GSC3516** SIP Intercom Speaker is a high-performance SIP/Multicast talk-back intercom speaker with built-in microphone array, designed for two-way voice communication, paging, and facility-wide communication systems in commercial and enterprise environments. It delivers HD audio, intelligent microphone beamforming, and full-duplex communication, making it one of the most advanced speakers in the GSC intercom range.
Unlike basic paging speakers, the **GSC3516** supports both speaker output and multi-microphone voice pickup, enabling real-time conversation between users and remote endpoints such as SIP phones, PBX systems, and control stations.
**Ideal For**
- Office and enterprise intercom systems
- Schools and university campuses
- Hospitals and healthcare communication
- Warehouses and industrial paging systems
- Security and emergency response systems
- Smart building voice communication setups
**Benefits**
Its 15W HD speaker and beamforming microphones allow clear communication over moderate distances, while built-in filtering features (whitelists/blacklists) help prevent unwanted calls or paging interruptions.
- The GSC3516 is designed for true two-way SIP communication, meaning it can both broadcast audio and capture voice replies clearly using its microphone array.
- With support for Wi-Fi, Bluetooth, PoE, and SIP multicast paging, it can be deployed flexibly across modern IP-based communication infrastructures.
- Grandstream GSC3516 SIP Intercom Speaker
- Wall/ceiling mounting bracket
- Installation hardware kit
- Documentation pack
- SIP/Multicast talk-back speaker (2-way audio)
- 15W HD high-fidelity speaker output
- SIP/Multicast talk-back speaker (2-way audio)
- 15W HD high-fidelity speaker output
- Full-duplex communication with echo cancellation
- 3 directional microphones + 1 auxiliary omnidirectional mic
- Microphone beamforming array (MMAD)
- ~4.2m voice pickup range
- SIP paging and multicast paging support
- Bluetooth and Wi-Fi connectivity
- PoE / PoE+ support
- Call priority override and paging groups
- Whitelist / blacklist / greylist call filtering
- Integration with Grandstream SIP phones, GDS door systems, and PBX platforms
- Product Type: SIP/Multicast talk-back intercom speaker
- Model: GSC3516
- Audio Output: 15W HD speaker
- Microphones: 3 directional + 1 omnidirectional (beamforming array)
- Communication Type: Full-duplex two-way audio
- Pickup Range: Approx. 4.2 meters
- Network Interface: 10/100 Mbps Ethernet
- Power: PoE / PoE+ support
- Wireless: Dual-band Wi-Fi (802.11 a/b/g/n/ac)
- Bluetooth: Supported
- Audio Codecs: Opus, G.722 and other wideband codecs
- Protocols: SIP, multicast paging
- Audio Features: Acoustic echo cancellation, noise suppression
- Mounting Type: Wall or ceiling mount (installation dependent)
- Control Interface: Web-based configuration
**What's in the Box**
- Wall/ceiling mounting bracket
- Installation hardware kit
- Quick installation guide: Included documentation
- Documentation pack
**Shipping and Fulfilment**
- **UK delivery:** Standard, express and timed services are shown at checkout where available.
- **Dispatch:** Stocked products are prepared for dispatch during normal business days.
- **Large or project orders:** Delivery timing is confirmed with the order or quotation.
- **VAT:** Product prices are displayed excluding VAT; VAT is calculated at checkout.
Grandstream GSC3516 SIP Intercom Speaker
£175.00
Excl. VAT
· In stock for trade orders
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