Grandstream GSC3518HS SIP/Multicast Talk-Back Horn Speaker

The GSC3518HS is a SIP/multicast talk-back horn speaker that provides crystal clear HD audio, a high-fidelity 50-Watt speaker, and IP66-rated water and dust protection. Ideal for outdoor campuses, public spaces, large offices, school playgrounds, hospitals, parks, warehouses, and more, the GSC3518HS provides a powerful outdoor announcement solution that expands security and communication. This high-powered SIP speaker includes 3 microphones, AI-based background noise reduction, and intelligent text-to-speech to ensure every word is heard clearly in talk-back scenarios. The GSC3518HS supports PoE++ input and PoE+ output, catering to device cascading scenarios. Thanks to its' modern industrial design and extensive features, the GSC3518HS is an ideal SIP talk-back horn speaker for any setting, allowing users to easily build a powerful intercom, security, and public-address announcement solution.

Key Features & Benefits:

• 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
• Made with durable PC + ABS material and a stainless steel mounting bracket to support harsh outdoor environments
• 2 Year Warranty

Software Specifications:

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 (wide-band)
• G.726-32, iLBC, Opus, G.723, G.729A/B
• In-band and out-of-band DTMF (In audio, 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 (ToS, DiffServ, MPLS) QoS

Security:

• User and administrator level passwords
• 256-bit AES encrypted configuration file
• TLS, SRTP, HTTPS, 802.1x media access control, secure boot

Multi-language: 

• English, German, French, Spanish, Portuguese, Russian, and Chinese

Upgrade/Provisioning:

• Firmware upgrade via TFTP, HTTP, HTTPS, or local HTTP upload
• Mass provisioning using GDMS, TR069, or AES encrypted XML configuration file

Hardware Specifications:

Network Interfaces:

• 1x 10/100 Mbps port with integrated PoE/PoE+/PoE++ input
• 1x 10/100 Mbps port with integrated PoE/PoE+ output

Auxiliary Ports:

• 2x 2-pin Switch-in input ports
• 1x 2-pin Switch-out output port
• 1x differential line in port
• 1x differential line out port
• 2x network ports
• 1x DC24V-48V port, reset

Speaker:

• 50W high-fidelity speaker
• Frequency: 270Hz-13.2KHz
• Sensitivity: Up to 109 dBA at 1m/1W(1 kHz)

Max SPL:

• Up to 126dBA

Microphones:

• 3 Built-in microphones with 26.25 feet (8m) pickup distance

Power & Green Energy Efficiency:

• PoE++ Input, complies with IEEE 802.3bt standard, Class 8, Max power 71 Watt, Max Input voltage 57V
• PoE+ Output, complies with IEEE 802.3at standard, Class 4, Max power 25 Watt, DC IN 24V/4A - 48V/2A

General:

• Ingress Protection: IP66-rated, waterproof cable gland
• Material: PC + ABS (Polycarbonate-Acrylonitrile Butadiene Styrene)
• Aluminum back cover
• Stainless steel mounting bracket
• Installation Type: Wall Mount, Pole Mount

Temperature & Humidity: 

• Operation: -30°C to +60°C
• Storage: -40°C to +60°C
• Humidity: 10% to 90% Non-condensing

Physical:

• Unit Dimensions: 324.6mm(L) x 285.3mm(W) x 204.3mm(H)
• Unit Weight: 2.870kg (with mounting kits)
• Package Weight: 3.913kg

Compliance:

• FCC, IC, CE, RCM

 PartnerNET Grandstream GSC3518HS SIP/Multicast Talk-Back Horn Speaker Datasheet

Package Contents:

• 1x GSC3518HS Horn Speaker with adjustable mounting arm
• 1x Junction Box Cover (Protective housing for the rear cable connections)
• 4x  Expansion Bolts (Used for mounting the speaker bracket securely to a wall or ceiling)
• 2x Cable Glands (Waterproof cable connectors to seal and protect input cables)
• 3x Mounting Screws (PM 3 × 10 mm screws for securing the junction box cover)
• 2x Rubber Gaskets (Replaceable seals used to maintain waterproof performance)
• 2x Backup Bolts (M4 × 10 mm bolts for bracket adjustment and backup locking)
• 1x Quick Installation Guide
• 1x Regulatory Paper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Specifications
Manufacturer	Grandstream
Product Type	SIP Horn Speaker
Series	GSC35xx
Technology	IP
HD Audio	YES
Ethernet Port	10/100M
Voice pick-up range	Up to 8m
POE	YES
Warranty	2 Years