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Intercom · Two-Way

Grandstream GSC3510

Two-Way Full-Duplex SIP Intercom Speaker with 4.2m Pickup

The Grandstream GSC3510 is a two-way full-duplex SIP intercom speaker and microphone that lets offices, schools, hospitals and apartments build voice intercom solutions expanding both security and communication. It combines a high-fidelity 8W HD speaker with three directional microphones using Multichannel Microphone Array Design and beamforming for a 4.2-metre pickup distance, plus advanced acoustic echo cancellation, PoE/PoE+, dual-band Wi-Fi, Bluetooth and a multi-purpose input port.

Two-Way Full-Duplex

Talk and listen

3 Directional Mics

MMAD with beamforming

4.2m Pickup Range

Covers the room

8W HD Speaker

Clear announcements

2-Way
Full-Duplex
3
Directional Mics
4.2m
Pickup Range
8W
HD Speaker

All Grandstream Products in a quick overview.

IP Phones, IP Video Phones, Access Points, IPPBX, Gateways& ATAs

Intercom and Paging in One Device

The GSC3510 does both jobs: broadcast announcements across a zone, and hold a proper two-way conversation with whoever is in the room.

3 Directional Mics with MMAD

Three directional microphones using Multichannel Microphone Array Design and beamforming deliver a 4.2-metre pickup distance

Full-Duplex Speakerphone

A full-duplex speakerphone with HD acoustic chamber and advanced acoustic echo cancellation allows natural two-way conversation

High-Fidelity 8W HD Speaker

Doubles as a paging speaker for announcements when not being used for intercom calls

PoE and PoE+ Network Port

One 10/100Mbps Ethernet cable delivers both network and power for straightforward installation

Integrated Dual-Band Wi-Fi

2.4GHz and 5GHz Wi-Fi support gives placement flexibility across a building

Integrated Bluetooth

Bluetooth support broadens pairing and deployment options

Multi-Purpose Input Port

Connect a wide range of peripherals for tailored intercom, alerting and control setups

SIP and Multicast Support

Register as a SIP endpoint on your PBX and take part in multicast paging groups

Free GDMS Management

Provision and monitor devices centrally through Grandstream's free cloud platform

What Our Customers Say

Hear directly from businesses that have transformed their communications with Cohesive Technologies solutions.

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Cancer Institute
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Cleo Gold
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Balaji Amines Ltd
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Vitel Global Com

Grandstream GSC3510 — Common Questions

Everything you need to know about the Grandstream GSC3510 before you buy.

The GSC3510 is a two-way full-duplex SIP intercom speaker and microphone. It allows offices, schools, hospitals, apartments and similar facilities to build voice intercom solutions that expand security and communication.
It uses three directional microphones with Multichannel Microphone Array Design and a beamforming array, providing a pickup distance of approximately 4.2 metres.
The GSC3505 is a one-way public address speaker with no microphone, intended for announcements only. The GSC3510 adds three directional microphones and full-duplex audio, so it supports genuine two-way intercom conversations as well as paging.
Both are two-way intercom speakers. The GSC3510 has an 8W speaker and three directional microphones, while the GSC3516 steps up to a 15W speaker and adds an omnidirectional auxiliary microphone plus allowlist and blocklist call filtering.
Yes. It supports SIP calling for two-way intercom and multicast paging for one-way announcements, so a single device can cover both requirements in a zone.
Cohesive Technologies is an authorised Grandstream distributor for India, Sri Lanka, Nepal and the Maldives. Contact our team for GSC3510 pricing, stock availability, demo units and pre-sales design support, and we will connect you with your nearest authorised partner.