Communications Guide · 9 March 2026
How to modernise your business phone system
A practical migration framework for moving off legacy telephony.
By the Telappliant team
Modernising a business phone system isn't just swapping handsets. It's an opportunity to remove operational friction, consolidate vendors and prepare for AI - without disrupting live services.
A practical migration framework
- Audit current numbers, DDIs, call flows and integrations
- Map who actually answers which calls today
- Choose a target platform - cloud PBX, Teams-native, or hybrid
- Port numbers in phased groups to reduce risk
- Retire legacy lines and ISDN once traffic has moved
Common pitfalls to avoid
- Under-scoping CRM and helpdesk integrations
- Skipping call-quality testing on the new circuit
- Leaving analogue devices (fax, alarms, lifts) unplanned
- Not training front-of-house users before go-live
Next steps
Frequently asked questions
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