On-premise and Hybrid Phone Systems
Keep your existing PBX investment and extend it to the cloud - hybrid telephony designed for phased migration, not rip-and-replace.
About on-premise and hybrid phone systems
Not every business is ready for a full cloud migration. Some have recent on-premise PBX investment, regulatory constraints, or sites with poor connectivity. Telappliant's hybrid model lets you keep the PBX you have, extend it to the cloud at your own pace, and consolidate later.
We support major on-premise platforms - SpliceCom, NEC, Mitel, Avaya, 3CX and others - with SIP trunks, cloud-based softphones, hosted users, and a single number plan that spans on-premise and cloud users transparently.
Phased migration means individual departments or sites can move to cloud users while the rest stay on the PBX. Numbers, dial plans, voicemail and call recording stay consistent through the transition. There is no day-one rip-and-replace risk.
Disaster recovery is built in. If the on-premise system fails, calls automatically route to cloud users or to the AI receptionist. If connectivity drops at a site, local survivability keeps internal and emergency calls working.
We also support hybrid contact centre - on-premise agents and cloud agents working from the same queue with unified reporting. This is the practical path for businesses that have invested in PBX hardware but need cloud flexibility for remote teams.
What's included
The capabilities included as standard with this service.
Multi-vendor PBX support
SpliceCom, NEC, Mitel, Avaya, 3CX and others.
SIP trunks
Replace ISDN with resilient SIP trunks ahead of switch-off.
Cloud user extensions
Add cloud users that look and behave like PBX extensions.
Unified dial plan
Single internal numbering across on-premise and cloud.
Hybrid contact centre
PBX and cloud agents in a single queue with shared reporting.
Local survivability
Sites keep working for local calls if WAN drops.
Where this fits
Common scenarios where this service delivers measurable value.
ISDN switch-off readiness
Replace ISDN with SIP without changing your PBX.
Remote-worker enablement
Add cloud softphones for remote staff while head office stays on PBX.
Multi-site businesses
Mix cloud and on-premise per site based on connectivity and use case.
Acquired companies
Bring inherited PBXs into one number plan without forcing migration.
Common questions
Related services
Talk to us about on-premise and hybrid phone systems
A short call, no obligation.
Talk to a UK technology partner who's done this for 20 years
Book a practical, no-pressure consultation. We'll review your current setup, show where AI communications, cloud telephony or managed IT could improve customer experience and reduce admin - and tell you straight if you don't need us.
- UK-based people, real account management
- Honest recommendations - even if it's not us
- Practical AI where it adds value, not hype
