3CX platform
Call handling, users, extensions, apps, queues, IVR and administration in one business communications platform.
Managed business phone systems
A phone system built around the way your team works.
39T is a 3CX and Yealink partner providing managed phone systems, business devices, SIP and VoIP trunks, number porting and ongoing support for UK organisations.
39T managed voicePlatform, devices, numbers and support
- 3CX partner-led design and migration
- Yealink partner desk, DECT and meeting-room devices
- SIP and VoIP trunks with number porting
- Call flows, queues, reporting and support
One joined-up service
Remove the gaps between phone-system suppliers.
A business phone solution depends on the platform, internet connection, local network, handsets, numbers and carrier service. 39T can design and manage those parts together.
Yealink devices
Desk phones, cordless DECT devices and conference-room options selected for the users and environment.
SIP & VoIP trunks
Inbound and outbound calling capacity, UK numbers, DDIs and porting arranged around the new system.
Managed support
Configuration, updates, user changes, fault ownership and practical support from a UK service team.
3CX
Partner-led business communications
39T can assess, deploy and support 3CX as part of a wider connectivity and network service.
- New installations and migrations
- Call queues, ring groups and auto-attendant
- Desktop, web and mobile working
- Ongoing licensing and support
From old PBX to modern calling
Plan the migration before moving the numbers.
A safe migration starts with an inventory of telephone numbers, users, devices, call flows, opening hours, recording requirements, integrations and continuity needs.
- Document existing numbers and porting records
- Rebuild call routing and business-hour rules
- Stage devices and test inbound and outbound calls
- Agree the cutover, support and rollback plan
Explore the phone service
Platform, hardware and trunks.
Security and resilience
Voice is part of the business network.
IP telephony should be planned with appropriate network separation, device administration, secure credentials, call restrictions, update management and resilient connectivity.
Review your current phone system
Tell us about your users, numbers, existing contract, handsets and target migration date.
Request a phone-system reviewFrequently asked questions
Before changing phone systems.
Can we keep our existing telephone numbers?
In many cases, yes. Number porting depends on the current provider, number type, account records and an accepted porting order. 39T will check the details before setting a migration date.
Can staff use the phone system away from the office?
A properly configured 3CX deployment can support approved desk phones, desktop or web clients and mobile apps, subject to licensing, security policy and the agreed design.
Can 39T supply the handsets and telephone service?
Yes. 39T can provide the 3CX platform, suitable Yealink devices, SIP or VoIP trunks, number porting, configuration and ongoing support as one managed solution.
Will calls still work if the office internet fails?
Resilience options can include mobile or desktop apps, inbound diversion, secondary connectivity and alternative routing. The right design depends on the business continuity requirement.