Setting up Microsoft Teams telephony for an office involves a structured process that combines licensing, technical configuration, number management, and user training. The first step is to confirm that your Microsoft 365 tenancy is correctly licensed for Teams Phone, including any required add-ons for calling plans or direct routing. Once licensing is in place, the telephony design is planned: deciding which staff need direct numbers, how calls should be routed, and what business hours, hunt groups, and call queues are required. This planning stage is essential to ensure the system supports your existing workflows, such as reception handling, sales teams, and remote or hybrid workers.
The technical setup then focuses on integrating Teams with the chosen telephony option, whether that is a Microsoft calling plan or a SIP trunk via direct routing. This includes configuring your Session Border Controller (SBC), porting existing numbers, setting up emergency services information, and creating call flows, auto-attendants, and voicemail policies. User accounts are then enabled for voice, devices are provisioned, and quality-of-service settings may be applied to your network to prioritise voice traffic. Finally, testing, staff training, and ongoing monitoring are carried out to ensure calls are reliable, costs are controlled, and the solution can scale as your organisation grows.
The process typically begins with an assessment of your current phone system, internet connectivity, and Microsoft 365 environment. This identifies any gaps in licensing, bandwidth, or network configuration that could affect call quality or feature availability. A telephony design is then agreed, mapping out user roles, call flows, and required features such as voicemail, call recording, and reporting.
Next, the technical configuration is completed. This includes enabling Teams Phone licences, setting up calling plans or direct routing, configuring the Session Border Controller if used, and preparing number porting. Auto-attendants, call queues, business hours, and holiday routing are created to reflect how your office handles inbound and outbound calls.
Finally, users are enabled for calling, devices such as headsets and Teams handsets are deployed, and the system is thoroughly tested. Staff receive basic training on making and transferring calls, checking voicemail, and using Teams on multiple devices. Ongoing monitoring and support help maintain call quality and allow adjustments as your office requirements change.
