How long does the MS Teams Telephony Setup process typically take for a business?

The time required to complete an MS Teams telephony setup typically ranges from a few days to several weeks, depending on the size of the organisation, the complexity of existing systems, and how prepared the business is with licences, numbers, and network readiness. For a small business with straightforward requirements, where the internet connection is already suitable and users are familiar with Microsoft 365, configuration can often be completed within 3–7 working days. This usually covers planning, licence allocation, basic call routing, number assignment, and initial testing. Larger organisations, or those moving from legacy phone systems with multiple sites, queues, and compliance needs, may require 2–6 weeks to allow for detailed design, staged migration, and user training, while minimising disruption to day-to-day operations.

The process is not just about turning on a feature in Microsoft Teams. A successful deployment requires assessing call flows, ensuring the network and broadband can support voice traffic, integrating existing numbers, and configuring security and compliance settings. Time is also needed to test call quality, voicemail, auto-attendants, and hunt groups before going live. When planned correctly, much of the work can be carried out in the background, with a short, well-managed cutover window. As a result, the overall duration is shaped less by the technical steps themselves and more by the level of planning, testing, and user readiness required to deliver a smooth transition.