- Organisation
- Home Office, United Kingdom
- Predecessor
- Skype for Business and the preceding legacy enterprise telephony environment
- Destination
- Microsoft Teams Phone with Colt Direct Routing as a Service as the primary telephony platform
- Workload
- Microsoft Teams Phone and Colt Direct Routing as a Service
- Stage
- completed
Evidence boundary: The two duration formulations apply to differently scoped descriptions in the source and are preserved rather than collapsed. Colt Direct Routing as a Service remained the primary telephony platform.
Verified platform change
The Home Office migrated approximately 63,000 users, 5,000 appliance accounts, 700 meeting rooms and more than 200 sites to Teams Phone. The source describes the execution as eight working days and the accelerated migration wave as completed within one week.
Transition
From: Skype for Business and the preceding legacy enterprise telephony environment
To: Microsoft Teams Phone with Colt Direct Routing as a Service as the primary telephony platform
Known unknowns
The two duration formulations apply to differently scoped descriptions in the source and are preserved rather than collapsed. Colt Direct Routing as a Service remained the primary telephony platform.