Grandstream GSC3518HS SIP/Multicast Talk-Back Horn Speaker
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- Brand Store: Grandstream
- Model: Grandstream GSC3518HS
- Availability: Out Of Stock
- Part No: GSC3518HS
Key features
High-powered 50W speaker with maximum volume of 126 dBA, ideal for coverage of expansive outdoor areas
3 microphones, AI-based background noise reduction, and intelligent text-to-speech to ensure every word is heard clearly in talk-back scenarios
Full-band and wide-band audio codec support, including Opus & G.722
Includes differential LINE IN and LINE OUT connections
Supports Airplay, ONVIF, RTSP/HTTP streaming, local audio files, and mobile app playback
SIP paging, multicast paging, call waiting with priority override, and more
One 10/100Mbps network port with PoE/PoE+/PoE++ input, and one 10/100Mbps network port with PoE/ PoE+ output
IP66-rated waterproof and dustproof; includes a durable stainless steel bracket suitable for harsh outdoor environments
3 microphones, AI-based background noise reduction, and intelligent text-to-speech to ensure every word is heard clearly in talk-back scenarios
Full-band and wide-band audio codec support, including Opus & G.722
Includes differential LINE IN and LINE OUT connections
Supports Airplay, ONVIF, RTSP/HTTP streaming, local audio files, and mobile app playback
SIP paging, multicast paging, call waiting with priority override, and more
One 10/100Mbps network port with PoE/PoE+/PoE++ input, and one 10/100Mbps network port with PoE/ PoE+ output
IP66-rated waterproof and dustproof; includes a durable stainless steel bracket suitable for harsh outdoor environments

| GSC3518HS Horn Speaker | |
|---|---|
| Protocols / Standards | SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, LLDP-MED, SIMPLE, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6, OpenVPN |
| Voice Codecs and Capabilities | G.711µ/a, G.722, G.726-32, iLBC, Opus, G.723, G.729A/B, in-band/out-of-band DTMF (RFC2833, SIP INFO), VAD, CNG, PLC, AJB, AGC, ANS |
| Telephony Features | SIP Paging, Multicast Paging, Group Paging, Push-to-Talk (PTT), Call-waiting with priority override |
| QoS | Layer 2 QoS (802.1Q, 802.1p), Layer 3 QoS (ToS, DiffServ, MPLS) |
| Security | User/admin passwords, 256-bit AES encrypted config file, TLS, SRTP, HTTPS, 802.1x MAC control, secure boot |
| Multi-language | English, German, French, Spanish, Portuguese, Russian, Chinese |
| Upgrade / Provisioning | Firmware upgrade via TFTP, HTTP, HTTPS, local HTTP upload; mass provisioning via GDMS, TR069, AES encrypted XML |
| Ingress Protection | IP66-rated, waterproof cable gland |
| Installation Type | Wall Mount, Pole Mount |
| Temperature & Humidity | Operation: -30C to +60C, Storage: -40C to +60C, Humidity: 10%-90% non-condensing |
| Package Content | GSC3518HS Horn Speaker, Mounting kit, Quick installation guide |
| Unit Dimensions | 324.6mm (L) x 285.3mm (W) x 204.3mm (H) |
| Material | PC + ABS, Aluminum back cover, Stainless steel mounting bracket |
| Compliance | FCC, IC, CE, RCM |
| Network Interfaces | 1x 10/100 Mbps PoE/PoE+/PoE++ input, 1x 10/100 Mbps PoE/PoE+ output |
| Auxiliary Ports | 2x 2-pin Switch-in, 1x 2-pin Switch-out, 1x differential line-in, 1x differential line-out, 2x network ports, 1x DC24V-48V port, reset |
| Speaker | 50W high-fidelity, 270Hz–13.2kHz, sensitivity up to 109 dBA at 1m/1W (1 kHz), Max SPL 126 dBA |
| Microphone | 3 built-in microphones, 8m (26.25 ft) pickup distance |
| Power & Green Energy | PoE++ input (IEEE 802.3bt Class 8, max 71W, max voltage 57V), PoE+ output (IEEE 802.3at Class 4, max 25W), DC IN 24V/4A–48V/2A |
Download Grandstream GSC3518HS Datasheet
| General | |
| Manufacturer | Grandstream |
|---|---|
| Model | Grandstream GSC3518HS |
| Manufacturer Part No | GSC3518HS |
| Compatible Country | Middle East, Africa, Iran, Dubai |
| Country of Origin | China |




























