GrandstreamSKU GSC3506-V2In stock

Grandstream GSC3506 V2 SIP Intercom Speaker

4.9/5 from verified trade buyers Read reviews
Authorised supply Project support UK delivery options
High demand this week 18 buyers viewed this product today. Need project pricing? Our team can quote bulk and renewal orders.
£120.00 Excl. VAT
Need multiples? Volume discounts for installers, MSPs and resellers.
Fast UK fulfilment Next-day and timed delivery options at checkout.
Price match help Send us your project list for a sharper trade quote.
Genuine stock Authorised supply with UK dispatch options.
Expert advice Pre-sales sizing from security and IT specialists.
**Product Overview** The **Grandstream** **GSC3506** V2 SIP Intercom Speaker is a high-power SIP/Multicast public address speaker designed for large-scale paging, announcements, and emergency broadcast systems in commercial, industrial, and institutional environments. It delivers crystal-clear HD audio through a 30W high-fidelity acoustic chamber, making it suitable for loud, wide-area sound distribution. It supports integration with SIP systems, IP PBXs, and multicast paging networks, allowing organisations to deploy scalable voice announcement and security alert systems across multiple zones or buildings. **Ideal For** - Office and enterprise paging systems - Schools and universities - Hospitals and healthcare facilities - Warehouses and factories - Retail and hospitality environments - Public safety and emergency alert systems **Benefits** Its SIP and multicast paging capabilities allow flexible deployment across large networks without complex analog PA infrastructure. Priority override ensures urgent alerts can interrupt ongoing broadcasts when needed. - The GSC3506 V2 is built for high-volume, high-clarity audio broadcasting, making it ideal for environments where messages must be heard clearly over background noise. - Because it integrates into SIP ecosystems, it can be centrally managed alongside other Grandstream devices such as IP phones, intercoms, and access control systems. - Grandstream GSC3506 V2 SIP Intercom Speaker - Mounting template and hardware kit - Installation guide - Documentation pack - SIP paging and multicast paging support - 30W high-fidelity HD speaker with acoustic chamber
  • SIP paging and multicast paging support
  • 30W high-fidelity HD speaker with acoustic chamber
  • Group paging and push-to-talk (PTT) support
  • Call waiting with priority override
  • Wide-band and full-band audio codecs (including Opus and G.722)
  • Network interface with PoE / PoE+ / PoE++ support
  • Alarm input and switch input interfaces
  • Volume control and reset buttons
  • USB and auxiliary port support (for configuration/expansion)
  • Whitelist/blacklist call filtering for access control
  • Centralised provisioning via Grandstream management tools
  • Product Type: SIP / Multicast IP paging speaker
  • Model: GSC3506 V2
  • Audio Output: 30W high-fidelity speaker
  • Audio Type: 1-way broadcast speaker (no microphone)
  • Protocols: SIP, multicast paging, push-to-talk (PTT)
  • Audio Codecs: Opus, G.722 and other wideband codecs
  • Network Interface: 10/100 Mbps Ethernet
  • Power: PoE / PoE+ / PoE++
  • Ports: Alarm-in, switch-in, USB, line-out, DC input
  • Control: Volume buttons, reset button
  • Deployment: Wall/ceiling mount (depending on installation kit)
  • Operating Mode: SIP registered endpoint or multicast receiver
  • Security: SIP authentication, TLS/SRTP support (deployment dependent)
**What's in the Box** - Mounting template and hardware kit - 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 GSC3506 V2 SIP INTERCOM SPEAKER
Grandstream GSC3506 V2 SIP Intercom Speaker £120.00 Excl. VAT · In stock for trade orders
Trade pricing availableNext-day UK dispatchAuthorised supplyProject quote supportSecure checkoutExpert pre-sales advice

Trusted by trade buyers

★★★★★ 4.9 / 5 from 120+ verified reviews
WG
Wesley G
★★★★★

"CLI Secure has been our go-to for Fortinet hardware and renewals. Fast delivery and knowledgeable support every time."

Wesley G
KD
Keith D
★★★★★

"We ordered Grandstream phones for a full office rollout. The trade pricing and next-day delivery saved us both time and budget."

Keith D
RM
Rania M
★★★★★

"Very professional IT networking supplier. Their pre-sales team helped us spec the right firewall for a multi-site deployment."

Rania M
JT
James T
★★★★★

"Great stock availability on Hikvision cameras. Everything arrived well packaged and on time. Will order again."

James T

Built for B2B buying

From product selection to deployment, this is made for real projects.

Get the hardware, licences and supporting kit you need without chasing multiple suppliers. CLI Secure helps trade buyers confirm fit, stock, delivery and project pricing before checkout.

1Check compatibility
2Choose fulfilment
3Deploy with support
Trade quote ready Send your basket for quantity pricing and project supply checks.
Same basket support Add licences, mounts, switches, storage or accessories with confidence.
Grandstream GSC3506 V2 SIP INTERCOM SPEAKER
Need fit advice? Ask before checkout and avoid wrong-spec purchases.

Better buying value

Why trade buyers choose CLI Secure

Generic marketplace Low context
  • Limited project advice
  • Unclear warranty or channel source
  • Harder to quote bundles and renewals
Buying direct Slower procurement
  • Separate suppliers for accessories
  • Less flexible fulfilment for mixed baskets
  • More admin for repeat trade orders

Why choose us

Procurement that feels fast, clear and trade-ready.

Every product page is designed to help you move from shortlist to checkout with fewer unknowns.

Authorised supply Source genuine stock from known B2B channels.
Project help Ask for fit checks, renewal advice and quantity pricing.
Fast dispatch Choose UK delivery options for urgent deployments.
Secure checkout Order online or speak to the team for larger baskets.

Verified buyer feedback

Trusted by installers, resellers and IT teams.

★★★★★

Fast dispatch and helpful advice before we placed a multi-site order. Pricing was clear and the product arrived ready for install.

Wesley G.
★★★★★

CLI Secure helped us confirm the right supporting accessories and saved us a return. Good trade service.

Keith D.
★★★★★

Reliable fulfilment for security hardware and renewals. The team understands what business buyers need.

Rania M.

Common questions

Product and order FAQs

Can I request trade or bulk pricing?

Yes. For multi-unit, reseller or project orders, contact CLI Secure and our team can review the basket for trade pricing.

How quickly can this be delivered?

Available delivery options are shown at checkout. Many in-stock products support next-day or timed UK delivery.

Can you help confirm compatibility?

Yes. Share the existing setup, model numbers or project requirement and we can help confirm suitable hardware, licences or accessories.

Do you supply renewals and supporting accessories?

CLI Secure supplies hardware, renewals, licences and related accessories across networking, CCTV, VoIP and IT support categories.