Grandstream
SOFTWARE UCM-BASEGrandstream Software UCM Base Licence – 100 Extensions & 32 Concurrent Calls
The Software UCM base licence is Grandstream's UCM phone system as software: the same PBX that ships in the UCM appliances, licensed to run on your own server or virtual machine, starting at 100 extensions and 32 concurrent calls.
This is the UCM without the box. Organisations that already run a virtualised infrastructure — VMware, Hyper-V, a private cloud — often do not want another appliance in the rack; they want the PBX as one more VM with their own snapshots, backups and failover underneath it. That is exactly what this licence is for. The features are the UCM feature set: extensions, trunks, IVR, queues, conferencing and the Wave apps.
When the site outgrows the base capacity, the +100 extension and +500 extension upgrade packages stack on top — no reinstall, no migration.
Key features
- 100 extensions and 32 concurrent calls in the base licence
- Runs on your own server or VM — your infrastructure, your resilience model
- Full UCM feature set — IVR, queues, conferencing, recording, Wave apps
- Stackable upgrade packages — grow to hundreds of extensions without migration
Works with
- Upgrade 100 package — +100 extensions, +24 calls
- Upgrade 500 package — +500 extensions, +96 calls
- Grandstream IP phones — the endpoints it registers
- All IP PBX solutions — including the hardware UCMs if an appliance suits better
Frequently asked questions
Software UCM or a UCM appliance?
If you already run virtualisation well, software — the PBX inherits your backup and failover. If you do not, the appliance is simpler: plug it in and it is the phone system. Same features either way.
What happens when we outgrow 100 extensions?
Stack an upgrade package — +100/+24 or +500/+96 — onto the same installation. No reinstall, no migration, no downtime beyond applying the licence.
Does it include the Wave apps?
Yes — desktop, mobile and web clients are part of the UCM platform.
Planning a virtualised PBX? Call 0333 242 1314 or email sales@clisecure.com and we will spec the VM and the licence path together.
Product details
| Type | Software PBX licence — no physical product |
|---|---|
| Base capacity | 100 extensions, 32 concurrent calls |
| Runs on | Customer server or virtual machine |
| Expansion | Upgrade 100 and Upgrade 500 packages stack on top |
Customer reviews
Built for B2B buying
From product selection to deployment, this is made for real projects.
Get the hardware, licences and supporting kit you need without chasing multiple suppliers. CLI Secure helps trade buyers confirm fit, stock, delivery and project pricing before checkout.
Why choose us
Procurement that feels fast, clear and trade-ready.
Every product page is designed to help you move from shortlist to checkout with fewer unknowns.
Common questions
Product and order FAQs
Can I request trade or bulk pricing?
Yes. For multi-unit, reseller or project orders, contact CLI Secure and our team can review the basket for trade pricing.
How quickly can this be delivered?
Available delivery options are shown at checkout. Many in-stock products support next-day or timed UK delivery.
Can you help confirm compatibility?
Yes. Share the existing setup, model numbers or project requirement and we can help confirm suitable hardware, licences or accessories.
Do you supply renewals and supporting accessories?
CLI Secure supplies hardware, renewals, licences and related accessories across networking, CCTV, VoIP and IT support categories.
