£0.00
NetXL Logo
Hello! Log InYourAccount
  • Networking
  • Antennas
  • CCTV
  • Smart Home & Security
  • Speakers
  • VoIP
  • Accessories
  • Brands
  • Bundles
  • Reduced
Help & SupportExpress ShippingTrade Account
Explore
  • Brands A-Z
  • Categories
  • Reduced & Clearance
  • Bundles
Trade
  • Apply for Trade Account
  • Trade Account Benefits
  • API
More from NetXL
  • About Us
  • Blog
  • News
  • Careers
Terms
  • Terms & Conditions
  • Privacy Policy
Help & Support
  • Contact Us
  • FAQs
  • Delivery Policy
  • Returns
Apple Pay acceptedGoogle Pay accepted

Unit 4, Riverside Business Park, Walnut Tree Close, Guildford, Surrey, GU1 4UG

Registered in England & Wales. Company No: 13500507 VAT No: GB 386 0823 76

Copyright © 2025 NetXL Distribution Ltd, All rights reserved.

Home
Grandstream
Grandstream GSC3505 1-Way Public Address SIP Speaker
GSC3505 SIP Intercom Speaker Top View

Click to zoom

GSC3505 SIP Intercom Speaker Top View
GSC3505 SIP Intercom Speaker Side View
GSC3505 SIP Intercom Speaker Ports
GSC3505 SIP Intercom Speaker Back

Grandstream GSC3505 1-Way Public Address SIP Speaker

Part Number: GSC3505

Discontinued

This product has been discontinued.

Easy Returns

Grandstream's GSC3505 is a 1-way public address SIP speaker that allows offices, schools, hospitals, apartments and more to build powerful public address announcement solutions that expands security and communication. This robust SIP speaker offers crystal clear HD audio functionality with a high-fidelity 8W HD speaker. The GSC3505 supports Bluetooth devices, a built-in whitelist and blacklists to easily block unwanted calls, SIP and multicast paging, and integrated dual-band WiFi.

Description

The GSC3505 can be paired with other Grandstream devices, including desktop and cordless IP phones as well as the GDS series of Facility Access products, users can easily sculpt a state-of-the-art security and PA announcement solution. Thanks to its modern industrial design and rich features, the GSC3505 is the ideal SIP speaker for any setting..

Key Highlights

  • Speakerphone with HD acoustic chamber
  • SIP paging, Multicast paging, call-waiting with priority override
  • Full-band and wide-band audio codec support
  • Integrated dual-band 802.11 a/b/g/n WiFi
  • Integrated Bluetooth support
  • 1 x 10/100 Mbps network port with PoE/PoE+
  • Web-UI access for control and configurations

Documents

  • Data Sheet:GSC3505 SIP Intercom Speaker Data Sheet

You might also like

Grandstream GSC3510

Grandstream GSC3510 Intercom Speaker

£270.49inc VAT
grandstream gds3710 intercom front

Grandstream GDS3710

£266.50inc VAT
Best Seller
UA-INTERCOM-VIEWER-3-1

Ubiquiti Intercom Viewer 3-Pack

£457.49inc VAT

More by Grandstream

2N 9137161U Image 1

2N 9137161U IP Vario Intercom

£610.99inc VAT
2N 9151102CHRW Intercom Front

2N Force Intercom 9151102CHRW

£1,472.50inc VAT
Best Seller
GDS3725-1

Grandstream GDS3725 Video Door Station

£175.49inc VAT
Best Seller
GDS3727-1

Grandstream GDS3727 Door Entry System

£88.99inc VAT
grandstream gds3710 intercom front

Grandstream GDS3710

£266.50inc VAT
Grandstream GDS3712 HD IP Intercom

Grandstream GDS3712 HD Video IP Intercom

£212.50inc VAT
GSC3570 Image 3

Grandstream GSC3570 Intercom

£160.00inc VAT

Latest Tech News

Read Blog
What is TP-Link Omada? The Business Network Solution Explained
NetXL 20 May 2026 | 5 min readWhat is TP-Link Omada? The Business Network Solution Explained

See how Omada simplifies business networking with seamless WiFi roaming, centralised cloud management and scalable SDN infrastructure.

DECT vs WiFi: Are Grandstream WP Series Phones Better for Mobile Business Communication?
NetXL 13 May 2026 | 5 min readDECT vs WiFi: Are Grandstream WP Series Phones Better for Mobile Business Communication?

Discover how Grandstream’s WP Series combines WiFi 6, VoIP and Android mobility features to deliver flexible business communication beyond traditional DECT systems.

Why do calls still drop on a fast internet connection?
NetXL 21 Apr 2026 | 5 min readWhy do calls still drop on a fast internet connection?

Exploring how TP-Link solutions improve call quality and network performance

Is the Grandstream GDS372x Series the Best IP Video Door Station for Modern Access Control?
NetXL 30 Mar 2026 | 5 min readIs the Grandstream GDS372x Series the Best IP Video Door Station for Modern Access Control?

Breaking down the Grandstream GDS372x Series, from features and access options to where it makes the most sense.

Why Should You Become A Certified Shelly Installer?
NetXL 30 Mar 2026 | 5 min readWhy Should You Become A Certified Shelly Installer?

Hands-on training, expert guidance, and perks that make your smart home projects stand out!

Why Does Your Router Matter More Than Internet Speed? | DrayTek Vigor 2767 Guide
NetXL 27 Mar 2026 | 5 min readWhy Does Your Router Matter More Than Internet Speed? | DrayTek Vigor 2767 Guide

A practical guide to improving network performance, security, and reliability with the DrayTek Vigor 2767 Series

Understanding TP-Link's WiFi 7 Devices
NetXL 26 Mar 2026 | 5 min readUnderstanding TP-Link's WiFi 7 Devices

A detailed guide to TP-Link’s WiFi 7 range for every home, office, or lifestyle.

Understanding WiFi 7 in Hospitality
NetXL 26 Mar 2026 | 5 min readUnderstanding WiFi 7 in Hospitality

Next-Level WiFi For Every Guest and Space