08/05/2026
Moving from Avaya or Mitel to UCaaS? Start With These Four Steps
UCaaS can consolidate capabilities that often required multiple servers, appliances, licenses and support agreements in a legacy PBX environment.
Business calling, SMS, video, call recording, AI transcription, analytics and customer-experience tools can now be delivered within a common cloud platform. But a successful migration requires more than choosing a provider.
Four steps can significantly reduce cost, delay and disruption:
1. Choose the right delivery partner. Look for a team that understands both your existing Avaya or Mitel system and the UCaaS platform you are adopting. A partner that can manage number porting can further reduce handoffs and risk.
2. Review carrier contracts and account records. Confirm the terms for PRI, T1, SIP, analog and other voice services. Then verify the legal name, service address, billing telephone number, account number, PIN and authorized contact. Small mismatches can cause port rejections and missed cutover dates.
3. Migrate internal support personnel first. Give IT and help-desk employees time to learn the platform, test the configuration and become an active part of the deployment. Their operational knowledge also provides important oversight of the delivery partner.
4. Communicate and schedule by department. Coordinate the best migration window with each department and commit the necessary internal and external resources to every port. Support should remain available until inbound calls, outbound caller ID, routing, voicemail, devices and applications have been tested.
A UCaaS migration is not simply a phone replacement. It is an operational project that affects employees, customers and critical workflows. Good preparation is what allows an organization to gain the benefits of cloud communications without creating unnecessary disruption.
High Country Workplace Technologies helps businesses, government agencies and school districts migrate from legacy Avaya and Mitel systems to modern unified communications platforms—including planning, number porting, deployment, testing, training and support.
