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Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth

Three directional microphones and one omnidirectional microphone pick up speech up to 4.2 metres away, with advanced echo cancellation and a 15 W full-duplex speaker. A single network cable carries both data and power.

  • 15 W full-duplex speaker
  • Three directional beamforming microphones and one omnidirectional microphone
  • Voice pickup distance of 4.2 m
  • Advanced acoustic echo cancellation
  • Wideband and full-band codecs, including Opus and G.722
  • Powered over the network cable, PoE and PoE+
  • Dual-band 2.4 and 5 GHz wireless
  • SIP, multicast and group paging, PTT function
  • 2-pin input for an external call button
  • White, black and grey lists against unwanted calls
  • Mounting kits included
  • Diameter 257 mm, weight 0.92 kg
Ref.: GSC3516
Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth — image 1
Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth — image 2
Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth — image 3
Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth — image 4
Grandstream GSC3516 HD Speaker SIP Intercom with Wi-Fi and Bluetooth — image 5

Non-contractual photos

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No exchange, return or cancellation will be accepted on the grounds that something seen in a photo (accessory, port, colour, keyboard layout, packaging…) is not found on the delivered product. Only the specifications written on the page are binding for the order.

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  • Colour : one image often serves several colours, and the shade you see depends on studio lighting as much as on your screen settings; the colour sold is the one in the title and the specifications.
  • Props and accessories : the items shown around the product (cables, stands, decorative objects, content displayed on screen) are not included unless explicitly stated.
  • Packaging : boxes, labels and bundles change with the manufacturer's revisions: the packaging delivered may differ from the one in the photo.

What is binding: the product title, this page's technical specifications, the description and, when provided, the manufacturer's PDF datasheet available in the downloads.

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1/5
2 159,00 DHincl. VAT

Out of stock

Under Law 09-08, you have the right to access, rectify and object to the processing of your personal data. This processing has been authorised by the CNDP under no. D-CE-389/2015. Learn more

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Manufacturer's datasheetView the PDF · 689 Ko — downloadable

Product overview

The Grandstream GSC3516 SIP intercom combines audio performance and advanced connectivity for clear, secure communication. Equipped with a 15 W HD speaker and three directional microphones with MMAD technology, it picks up sound accurately across 4.2 metres. Its acoustic echo cancellation and support for the Opus and G.722 codecs deliver exceptionally pure sound. With dual-band Wi-Fi, built-in Bluetooth and a PoE/PoE+ port, it fits easily into any professional environment. Ideal for offices, schools or hospitals, the GSC3516 improves internal communication while enhancing security and productivity.

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Technical specifications

Technical specifications
Operating systemLinux
DisplayNone
Dimensions (W x D x H)257 mm diameter x 68.5 mm depth
Video resolutionNone (device has no camera)
Wireless technologyBuilt-in dual-band 802.11a/b/g/n/ac Wi-Fi (2.4 and 5 GHz) and Bluetooth 2.1 + EDR / 4.2
Speaker15 W high-fidelity HD speaker, 110 Hz to 20,000 Hz, up to 90 dBA at 1 W and 0.5 m
Voice codecsG.711µ/a, G.722 (wideband), G.726-32, G.723, G.729A/B, iLBC, OPUS
VoIP protocolsSIP (RFC 3261)
Call managementSIP paging, multicast paging, group paging, PTT calling, call waiting with priority override, Bluetooth SCO calling
Supported network protocolsTCP/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
Network interfaces1 Ethernet port, 10/100 Mbps, built-in PoE and PoE+
Weight920 g
SecurityUser and administrator passwords, MD5 and MD5-sess authentication, AES 256-bit encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control, secure boot
Talk timeNone (phone permanently powered)
Technical specifications (continued)
Standby timeNone (phone permanently powered)
Box contentsGSC3516 intercom speaker, mounting kits, quick installation guide
Power supplyBuilt-in IEEE 802.3af Class 3 PoE or IEEE 802.3at Class 4 PoE+
MountingMounting kits supplied
PoE powerYes
Device typeSIP intercom
Network port1 Ethernet port only
Power supply includedPower adapter NOT included, powered by PoE or PoE+
Audio processing3 beamforming directional microphones and 1 auxiliary omnidirectional microphone, 4.2 m pickup distance, echo cancellation (AEC) and noise suppression (ANS)
Management softwareGDMS (Grandstream Device Management System)
Supported handsetsNone (standalone device)
Audio bandwidthFull-band audio, 48 kHz voice sampling
Connectivity1 multi-purpose 2-pin input port and 1 reset button
Warranty1 year

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Under Law 09-08, you have the right to access, rectify and object to the processing of your personal data. This processing has been authorised by the CNDP under no. D-CE-389/2015. Learn more

Frequently asked questions

What are the delivery times and fees?
Delivery all over Morocco within 1 to 5 working days, at the same rate in every city for parcels up to 30 kg — and free delivery from 3 000 dh of purchases. Above 30 kg, the rate follows the weight and is shown on the product page and in the basket. You are notified by SMS, then called by the courier.
Is the product new and under warranty?
Yes: a new, genuine product, delivered in its original packaging with an invoice. The invoice serves as the warranty document (1 year) with the manufacturer's after-sales service in Morocco.
Can I collect my order in store?
Yes, at the Casablanca store (Mon–Fri 10am–7pm · Sat 10am–2pm) or the Témara collection point (Mon–Fri 8.30am–1pm / 2–6pm · Sat 8.30am–12.30pm). Payment on site: cash, bank card via terminal, certified cheque.
Which payment methods do you accept?
Bank card online (secure Attijari Payment), cash on delivery, bank transfer and certified cheque. All our prices are in dirhams, VAT included.
Can I get an invoice in my company's name (with its ICE)?
Yes. Provide your company's legal name and ICE when ordering: the invoice is issued in its name and enclosed with the parcel (handed over with the order for in-store collection). Companies and public bodies can also request a quote — reply within 24 working hours.

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