Unified communication and IP-PBX systems for every scale — Grandstream UCM appliances with cloud & software editions, Yeastar P-Series appliance and software PBX, and Epygi QX on-premise IP PBXs. Voice, video, IVR, call queues, mobility and contact-centre features from a single authorized distributor.
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On-Prem · Cloud · Software
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Your UC / IP-PBX is the brain of the phone system — routing every call and adding voicemail, IVR, call queues, conferencing, presence, chat, video and mobile apps. Cohesive Technologies brings three proven platforms together: Grandstream UCM for voice-and-video UC on-premise, in the cloud or as software; Yeastar P-Series for modular appliance or self-hosted software PBX with Linkus UC clients; and Epygi QX for rock-solid on-premise IP telephony from 32 to 5000 extensions. Browse each brand below and jump straight to any system.
One UC platform deployed your way — UCM6300 on-premise appliances, CloudUCM, SoftwareUCM, RemoteConnect and the Grandstream Wave collaboration app.
On-premise unified communication appliance handling voice, video, data and mobility for large deployments, with Wave collaboration built in.
Audio-focused UCM6300 models for organisations that need enterprise-grade voice, IVR and call routing without the video layer.
Fully cloud-hosted UCM — no hardware to buy, rack or maintain, with the familiar UCM feature set delivered as a subscription.
Run UCM as software on your own server or private cloud, keeping full control over where the system and its data live.
NAT and firewall traversal service that securely connects remote workers and branch devices back to your UCM without manual port forwarding.
Collaboration app for desktop, web and mobile — voice, video meetings, chat and presence tied to your UCM extension.
The P-Series PBX System unifies voice, video, messaging, contact centre and integrations — deployed as a modular hardware appliance or as self-hosted software, with Linkus UC clients across desktop, web and mobile.
On-premise IP-PBX appliance — four models (P520/P550/P560/P570) scaling from small teams to multi-site businesses, with modular telephony ports and DSP expansion.
Self-hosted software PBX you run on your own server or virtual machine, with the full P-Series UC feature set and Linkus UC clients.
On-premise IP telephony that scales from 32 to 5000 extensions, with built-in call routing, IVR, ACD, voicemail and conferencing across the full QX range.
The Epygi QX20 is an on-premise IP PBX supporting up to 32 extensions, with built-in call routing, IVR, voicemail and conferencing.
The Epygi QX50 is an on-premise IP PBX supporting up to 200 extensions, with built-in call routing, IVR, voicemail and conferencing.
The Epygi QX200 is an on-premise IP PBX supporting up to 256 extensions, with built-in call routing, IVR, voicemail and conferencing.
The Epygi QX500 is an on-premise IP PBX supporting up to 500 extensions, with built-in call routing, IVR, voicemail and conferencing.
The Epygi QX3000 is an on-premise IP PBX supporting up to 3000 extensions, with built-in call routing, IVR, voicemail and conferencing.
The Epygi QX5000 is an on-premise IP PBX supporting up to 5000 extensions, with built-in call routing, IVR, voicemail and conferencing.
Voice, video, chat, presence, voicemail and mobile apps unified on a single system your whole team logs into.
IVR auto-attendants, ACD queues, ring groups, wallboards and reporting for professional customer engagement.
On-premise appliance, private cloud or self-hosted software — choose the model that fits your IT and budget.
Connect CRM, helpdesk and collaboration tools, and scale from a handful of users to thousands of extensions.
The IP-PBX is the core of a modern business phone system, replacing legacy TDM exchanges with a software-driven platform that routes calls over IP and layers on voicemail, IVR, call queues, conferencing, presence, chat, video and mobile apps. As an authorized distributor, Cohesive Technologies offers a complete unified-communication and contact-centre portfolio in India, bringing Grandstream, Yeastar and Epygi together so you can specify, source and support the whole system from one partner.
Grandstream delivers the UCM6300 on-premise appliances alongside CloudUCM, SoftwareUCM, RemoteConnect and the Wave collaboration app, giving you voice-and-video UC however you want to host it. Yeastar P-Series unifies voice, video, messaging and contact centre in a modular appliance or a self-hosted software edition, with Linkus UC clients across desktop, web and mobile and a rich app ecosystem for CRM and helpdesk integration. Epygi QX rounds out the range with dependable on-premise IP PBXs from the 32-extension QX20 to the 5000-extension QX5000, each with built-in IVR, ACD, voicemail and conferencing.
Whether you are connecting a small office, a multi-site enterprise, a hotel, a hospital, an education campus or a busy contact centre, there is a matching UC / IP-PBX in this range. Every platform uses standard SIP, so it works with Grandstream, Snom and Yeastar IP phones and interoperates with common trunks and gateways. Cohesive Technologies backs each brand with expert consultation, genuine licensing and stock, deployment support, competitive pricing and nationwide delivery across India, Sri Lanka, Nepal and the Maldives.
Authorized distributor · Grandstream · Yeastar · Epygi · On-premise · Cloud · Software · Best price in India · Free consultation · Nationwide delivery
