Move the communications service—not just the phone system.
A controlled migration accounts for numbers, call flows, carriers, devices, integrations, users and support. TeraFi helps Australian partners validate the design before a customer date is committed.
Find out what the existing service really does.
Start with the calls that cannot fail: main numbers, business hours, after-hours routing, reception, queues, emergency and escalation workflows. Then expose the less-visible dependencies before they become cutover surprises.
- Numbers, ranges and carriers
- Inbound and outbound call paths
- Phones and analogue devices
- Paging, doors and site systems
- CRM and helpdesk workflows
- Recording and reporting needs
Evidence beats assumptions.
Use current bills, number lists, configuration exports, call-flow diagrams, device inventories and stakeholder interviews to build the migration baseline.
Select deployment around ownership.
The right Yeastar route depends on who operates the environment, how repeatable the service must be and what the customer needs to control.
P-Series Cloud Edition
Assess for a partner-led cloud communications model with centralised operational pathways.
P-Series Software Edition
Assess where a supported private or public hosting environment needs to remain under partner or customer control.
P-Series Appliance Edition
Assess where purpose-built on-site PBX hardware is justified by the operating requirements.
Plan the transition before promising the date.
Define acceptance
Agree which call paths, users, endpoints, recordings and integrations must work before handover.
Assign every owner
Document responsibilities for porting, carriers, configuration, customer communication and escalation.
Test in context
Use representative devices, sites, user roles and real customer journeys—not only test extensions.
Prepare fallback and hypercare
Set rollback criteria, support contacts, triage priorities and post-cutover coverage before go-live.
Retain only what still has a defined role.
A gateway can form part of a compatible staged design where analogue, ISDN, cellular or other legacy connectivity cannot be removed immediately. Treat it as a documented dependency with ownership and an exit plan.
Migration acceptance pack
- Signed call-flow and number baseline
- Validated endpoint and integration list
- Carrier and porting confirmation
- Test results and known exceptions
- Fallback decision and support roster
- Customer handover and training evidence
Turn the next PBX replacement into a controlled service transition.
Bring TeraFi the current-state evidence and customer outcome. We will help shape the Yeastar pathway and the next validation step.
Fact-checked on 11 August 2026 against current Yeastar P-Series information. Product fit, licensing and migration requirements must be confirmed for each environment.