Tenant separation
Keep occupiers, guests, building systems and management traffic logically separated.
Security-led business connectivity
Secure. Connected. Ready for business.
39T brings managed security, business Wi-Fi, leased lines and business phone systems together—giving organisations and serviced offices one team to plan, deliver and support essential communications.
39T Managed NetworkProtected and monitored
Internet connectedWi-Fi managedPhone system readyNetworks separated
SecurityProtection by design
Managed Wi-FiVisible and supported
Leased lineBusiness-grade access
Business security Managed Wi-Fi Leased lines Business phones SIP trunks Regional agents
Core 39T services
Build the network around the business.
Rather than treating internet, Wi-Fi, security and calling as separate purchases, 39T can bring them together as one managed service.
Business security
Secure gateways, network separation, filtering and practical controls designed around the way your team works.
Explore securityManaged Wi-Fi
Designed coverage, centrally managed access points, guest networks and ongoing monitoring.
Explore managed Wi-FiLeased lines
Dedicated internet connectivity for sites where performance, upload capacity and reliability matter.
Explore leased linesBusiness phones
Managed 3CX systems, Yealink devices, number porting and SIP or VoIP trunks.
Explore business phonesServiced offices
Multi-tenant connectivity, secure Wi-Fi and flexible telecoms built for office operators and their customers.
Explore office solutionsBusiness phone systems
Calls, numbers and devices managed as one service.
39T is a 3CX partner and provides business phone systems with Yealink desk phones, DECT handsets and conference devices. We can also supply SIP and VoIP trunks, port existing numbers and build call flows around how your team works.
- Desk, mobile, desktop and web calling options
- Queues, IVR, ring groups and business hours
- Number porting and new UK numbers, subject to availability
- Ongoing licensing, updates, monitoring and support
One managed calling platform
Connect users, handsets and public telephone numbers through a properly designed IP phone system.
Yealink devices→3CX platform→SIP / VoIP trunks
39TManaged core
Security Wi-Fi Internet MonitoringSecurity is part of the network
Reduce gaps between suppliers.
When separate companies own the firewall, Wi-Fi and internet connection, faults and responsibilities can become unclear. A joined-up design gives the business a more coherent service and a single route for support.
- Connectivity, Wi-Fi and security designed together
- Separate staff, guest and tenant networks where needed
- Monitoring and support from one service team
- Resilience options for business-critical sites
Built for multi-user environments
A better network for serviced offices.
Flexible workspaces need more than a shared router. They need reliable building connectivity, secure separation between occupiers, straightforward onboarding and support that understands the operator as well as the tenant.
Flexible onboarding
Create services for new offices and users without redesigning the network each time.
Managed visibility
Central monitoring helps identify faults, capacity concerns and access-point issues.
Connectivity without guesswork
Start with a site and risk review.
We look at the premises, users, critical services, coverage, expected growth and resilience needs before recommending a solution.
Understand
Users, premises, applications, current problems and business risks.
Design
Connectivity, Wi-Fi coverage, network separation and resilience.
Deliver
Coordinate provision, installation, configuration and handover.
Manage
Support, monitor and help the network develop with the business.
Responsible Internet routing
Our network expertise is part of the MANRS community.
39T connectivity is supported by the network engineering of 39D Services Limited. Its autonomous network, AS34979, is listed as a participant in the Mutually Agreed Norms for Routing Security (MANRS) Network Operators programme.
MANRS promotes practical safeguards including route filtering, anti-spoofing, accurate operational contact information and published routing data that other networks can validate. These practices help reduce the risk and impact of route leaks, route hijacks and traffic using forged source addresses.
Represent 39T in your area
Help local businesses become more secure and connected.
39T is recruiting independent agents to develop territories across the UK, with a particular focus on leased lines, managed Wi-Fi, business security, 3CX phone systems, SIP trunks and serviced offices.
Independent agent modelCommission on qualifying salesCentral design and sales support
Apply for your area Common questions
Planning the right service.
Can 39T manage both our internet and Wi-Fi?
Yes. 39T can design a solution that combines connectivity, managed Wi-Fi, network segmentation and ongoing support.
Do you work with serviced offices and flexible workspaces?
Yes. 39T provides connectivity and managed network solutions designed for multi-tenant buildings and flexible workspaces.
Can you provide a backup connection?
Backup options can be designed around the site and availability, including diverse fixed connectivity or mobile failover where suitable.
Can 39T replace our existing business phone system?
Yes. 39T can assess the current numbers, handsets, call flows and connectivity, then plan a managed migration to 3CX with suitable Yealink devices and SIP or VoIP trunks.