Deployment follows a predictable, low-risk sequence that minimises disruption and keeps migrations transparent and reversible. Each site moves through plan, build, pilot, cutover, and stabilisation with clear go or no-go checkpoints, user communications, and UAT sign-offs. Change windows include tested rollback paths, number fallbacks, and configuration snapshots so recovery is measured in minutes, not days. 
 

Preparation: 

• Current state capture: numbers, trunks, dial plan, devices, sites 
• Target state design: numbering, site codes, routes, and policies 
• Cutover playbooks with test and rollback steps 
   

Build and migrate: 

• Template-driven configuration per site and user role 
• Number claiming and porting schedules agreed with carriers 
• Wave-based user moves with communications and training 

Acceptance: 

• End-to-end call path validation, inbound and outbound 
• Quality baselines for MOS, jitter, and failure codes 
• Handover runbooks and admin enablement for Control Hub 

Go-live principle: treat voice as a program with milestones, not a one-time project.