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Qlingen vs Grandstream UCM

On-premises IP PBX appliance · Grandstream Networks, United States

The UCM series is a hardware PBX appliance bought once, with the Wave app for desktop and mobile and optional UCM RemoteConnect cloud services. Qlingen is a Grandstream UCM alternative you run on your own cloud: a multi-tenant phone system on FreeSWITCH with call queues, callbacks, a browser softphone, a mobile app, an AI assistant and a full REST API — deployed and managed on a server in your own cloud account from one panel.

Feature comparison between Qlingen and Grandstream UCM
Feature Qlingen Grandstream UCM
Where it runs Your own cloud account (Vultr, DigitalOcean, Hetzner, Linode, AWS, Google Cloud), deployed in one click On-premises appliance, optional cloud add-on
How you pay No per-user software fee: add seats without a new licence One-off hardware purchase, cloud services extra
Several companies on one system Yes, built in: each tenant has its own numbers, users and settings No
Call queues Yes, with agent login, strategies and hold music Yes
Queue callbacks (press 0, keep your place) Yes, included Limited
Position and estimated wait announcements Yes, included Position only
Browser softphone Yes, WebRTC in any browser Yes, Wave
Mobile app Yes, with push wake-up and colleague chat Yes, Wave
AI assistant that changes the setup for you Yes: ask in plain language, approve the plan, it runs No
REST API Yes, everything in the panel, per-tenant tokens Yes, limited scope
Custom call logic Yes, your own FreeSWITCH XML with a safety allowlist No
Who holds your call data You do, on your server You do, on the appliance

Why businesses choose Qlingen over Grandstream UCM

  • ✓Not tied to a box: run on any server and scale by adding CPU, not by buying a bigger appliance.
  • ✓Multi-tenant for hosting several companies.
  • ✓A modern web interface with an AI assistant and a complete REST API.
  • ✓Open call logic through custom FreeSWITCH dialplans.

Where Grandstream UCM is strong

  • •One-off purchase price with no per-user licence.
  • •Plug-and-play with Grandstream phones.
  • •Built-in video conferencing on larger models.

Frequently asked questions

Is Qlingen a good alternative to Grandstream UCM?
Yes for most businesses. Qlingen covers extensions, ring groups, call queues, IVR menus, voicemail, conferences, time conditions, inbound and outbound routing, a browser softphone and a mobile app. The UCM series is a hardware PBX appliance bought once, with the Wave app for desktop and mobile and optional UCM RemoteConnect cloud services.
What does Grandstream UCM do better than Qlingen?
One-off purchase price with no per-user licence. Plug-and-play with Grandstream phones. Built-in video conferencing on larger models.
Where is Qlingen stronger than Grandstream UCM?
Not tied to a box: run on any server and scale by adding CPU, not by buying a bigger appliance. Multi-tenant for hosting several companies. A modern web interface with an AI assistant and a complete REST API. Open call logic through custom FreeSWITCH dialplans.
Can I move from Grandstream UCM to Qlingen without losing my numbers?
Yes. Your numbers stay with your carrier, or you port them to any SIP trunk provider, and point the trunk at Qlingen. Extensions, ring groups and menus are recreated in the web interface or in bulk through the REST API.

Ready to see Qlingen on your own cloud?

Create an account, connect your cloud provider, and your first PBX server is about fifteen minutes away — then compare it with Grandstream UCM on your own calls. Every account starts with a 7-day free trial, no card required.

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