Treat a contact-center migration as an operational transition, not merely a software install.
Inventory
Document phone numbers, carriers, IVRs, queues, skills, users, integrations, recordings, reports, WFM/QM, compliance and disaster recovery.
Requirements and architecture
Define channels, routing, authentication, reporting, AI, outbound and retention. Map Carrier -> Platform -> Routing -> Agent -> CRM -> Reporting, including failover.
Build and test
Configure users, permissions, queues, flows, numbers, integrations, recordings, QA and dashboards. Test inbound, outbound, transfers, hold, voicemail, failover, integrations, recording, reporting and peak load.
Train and cut over
Train agents, supervisors, admins, QA, WFM and IT. Define a command center, escalation contacts and rollback trigger.
Hypercare
Monitor failed calls, latency, missing recordings, routing, integrations and agent issues. Do not decommission the legacy environment until rollback risk is acceptable.