SIP intercoms, PA speakers, video door entry and facility control stations — one IP platform for access and announcements
Intercoms & Paging — The GSC speaker range covers everything from single-zone PA announcements to two-way SIP intercom, indoors and out. Because the speakers are SIP endpoints, a page can be triggered from a desk phone extension rather than a separate paging amplifier.
Facility Access Systems — GDS door systems handle entry — from the audio-only GDS3702 and GDS3705 to HD video door stations such as the GDS3710 and the hemispheric GDS3712, which offers an unusually wide field of view for busy entrances.
Control Stations — The GSC3570 and GSC3574/GSC3575 act as the desk-side counterpart to the door station: an HD intercom and facility control unit for reception, security desks and apartments, with door release built in.
Video Management — GSurf Pro V2 provides the software layer — PC-based recording, indexing, search and storage management for up to 72 Grandstream cameras from one interface.
One-way SIP public address speaker for announcements, bells and background audio across offices, schools and retail spaces.
SIP public address speaker built for wider zone coverage where a single unit needs to fill a larger area clearly.
Updated one-way SIP PA speaker refining the GSC3506 for zone paging, alerts and scheduled announcements.
Two-way SIP intercom speaker combining paging with talkback, so staff can respond to an announcement rather than just hear it.
SIP intercom speaker with multiple microphones for reliable talkback in noisier or more open environments.
Advanced SIP intercom and paging units for sites needing richer audio handling and more flexible installation options.
Outdoor SIP horn speaker built to project announcements and alerts across yards, car parks and industrial areas.
HD video door system with integrated card reader and door control — the mainstream choice for secure building entrances.
Hemispheric IP video intercom offering an exceptionally wide field of view for busy or wide entrances.
Video door system series covering a range of entrance types, with access control and video intercom in one unit.
Cloud-based access control app for the GDS3720 Series — remote unlock, video intercom, visitor passes and door logs from your phone.
In-wall mounting box, rain cover, L-bracket, NFC cards and key fobs, and PoE injectors for GDS3720 Series door stations.
Audio door access system with card reader and door control for entrances where video is not required.
Compact audio door system for straightforward SIP-based entry control at secondary and internal doors.
HD intercom and facility control station for reception and security desks, with door release and monitoring built in.
Facility control stations extending the GSC3570 concept with a larger interface for busier reception and security positions.
PC-based video management software for recording, indexing, searching and storage management of up to 72 Grandstream cameras.
Door stations, intercoms and PA speakers are all SIP endpoints, so entry control and announcements share the same infrastructure.
GDS door calls ring to existing extensions and control stations, so visitors are handled without a dedicated proprietary handset.
From ceiling and wall speakers to the weatherproof GSC3518HS horn, announcements reach yards and car parks as clearly as corridors.
Most devices are powered over Ethernet, so a single cable handles both power and network at the door or speaker position.
Buildings usually end up with three separate systems: a door entry panel, a paging amplifier, and a phone system that talks to neither. Grandstream's facility range collapses that into one IP platform. GDS door stations, GSC intercoms and PA speakers are all SIP devices, which means a visitor at the gate can ring a reception extension, a security desk can release the door from a GSC3570 control station, and an announcement can be paged from the same phone system — without proprietary wiring between them.
On the audio side the GSC range spans one-way PA speakers (GSC3505, GSC3506 and the updated GSC3506 v2) for announcements and bells, two-way intercom speakers (GSC3510, GSC3516) where talkback is needed, the more advanced GSC3560/GSC3565 units, and the weatherproof GSC3518HS horn for outdoor areas. For entrances, the GDS family runs from audio-only stations (GDS3702, GDS3705) to HD video door systems (GDS3710, GDS3720 Series) and the hemispheric GDS3712 for wide entrances. Indoors, the GSC3570 and GSC3574/GSC3575 control stations give reception and security a dedicated screen and door release, while GSurf Pro V2 handles video recording, search and storage management.
Facility projects live or die on the details — which door needs video, how many paging zones a floor really needs, where an outdoor horn will actually be audible. As an authorized Grandstream distributor, Cohesive Technologies helps plan zones and entrances, supplies genuine GSC and GDS stock at competitive prices, and delivers nationwide across India, Sri Lanka, Nepal and the Maldives with full pre-sales and technical support.
Authorized distributor · SIP intercoms & door entry · PoE powered · Best price in India · Free consultation · Nationwide delivery
