Fast dispatch and helpful advice before we placed a multi-site order. Pricing was clear and the product arrived ready for install.
Wesley G.
GCC602x Licence for 200 extension SMB Upgrade
- Increases system capacity to up to 200 SIP users/extensions
- Supports up to ~48 concurrent calls (system dependent)
- One-time perpetual licence fee
- Compatible with GCC6020 and GCC6021 appliances
- Software-based activation (no hardware changes required)
- Scalable PBX expansion for growing businesses
- Integrated into GCC unified communications platform
- Maintains existing system configuration
- Product Type: IP PBX capacity expansion licence
- Compatibility: Grandstream GCC6020 and Grandstream GCC6021
- Licence Type: One-time (perpetual SMB upgrade)
- User Capacity: Up to 200 SIP users/extensions
- Concurrent Calls: Up to ~48 simultaneous calls (system dependent)
- Activation Method: Software licence key activation
- Deployment Type: Digital upgrade licence
- Application: IP PBX scaling / unified communications expansion
- Vendor: Grandstream Networks
- Requirement: Compatible GCC602x appliance with existing PBX system
Trusted by trade buyers
"CLI Secure has been our go-to for Fortinet hardware and renewals. Fast delivery and knowledgeable support every time."

"We ordered Grandstream phones for a full office rollout. The trade pricing and next-day delivery saved us both time and budget."

"Very professional IT networking supplier. Their pre-sales team helped us spec the right firewall for a multi-site deployment."

"Great stock availability on Hikvision cameras. Everything arrived well packaged and on time. Will order again."

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.
Better buying value
Why trade buyers choose CLI Secure
- Trade and bulk pricing support
- Compatibility advice before purchase
- UK delivery options and account support
- Hardware, renewals and accessories in one place
- Limited project advice
- Unclear warranty or channel source
- Harder to quote bundles and renewals
- Separate suppliers for accessories
- Less flexible fulfilment for mixed baskets
- More admin for repeat trade orders
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.
Verified buyer feedback
Trusted by installers, resellers and IT teams.
CLI Secure helped us confirm the right supporting accessories and saved us a return. Good trade service.
Keith D.Reliable fulfilment for security hardware and renewals. The team understands what business buyers need.
Rania M.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.





