SMB telco
Voice infrastructure modernisation
Lifting a 12-year-old voice platform without dropping a customer
A regional telco running a multi-tenant voice platform for thousands of downstream business seats had hit the ceiling on its on-prem stack. Vendor support windows were narrowing, capacity expansion was getting expensive, and the platform couldn't ship features competitors were starting to give away as standard.
Migration ran in three phases over four months: customer-by-customer routing redesign, parallel-platform cutover with number-portability handling, and decommission of the legacy stack. The trickiest part wasn't the new platform — it was making sure no active call dropped during the swap.
Outcomes
- Zero disruption to in-progress calls during cutover
- ~40% reduction in ongoing platform OPEX
- Call recording and basic analytics shipped to all tenants within 60 days