Dial plans are sets of rules for how to translate any numbers dialed by MS Teams users. For more information, refer tohttps://docs.microsoft.com/en-us/microsoftteams/what-are-dial-plans.

• Each dial plan contains up to 50 dialing rules. MS Teams searches the rules for a match to the number dialed by the user.

• When a match occurs, the rule settings determine what changes MS Teams applies to the dialed number. MS Teams then uses the translated number for routing through the user's associated voice routing policy.

The following types of dial plan exist:

Planning a dial plan

Decide whether to use the Global dial plan or create a customer specific-plan or plans. Using a dial plan provides a method to override the default translations applied by the country plans.

• List all types of numbers for which you need custom dial rules.

• You must make this list as comprehensive as possible. MS Teams checks all numbers not matched by the global or user plan against the country dial plan. That can lead to MS Teams prefixing numbers with + or + and the country code for the user's location.

• List which users or groups of users need to dial which numbers. Use this to assess whether you need to add the dialing rules to the tenancy's global dial plan or into separate user dial plans.