Extension Dialplan

hjan-22 

In the TAC choose Users then Manage users, then choose a user. Provided the user you are assigning already has E5 or anything else combined with Microsoft Teams Phone Standard license, you will be able editing General information in Account tab. Click Edit next to General Information, you should be provided a menu drawer on the right hand screen. Choose the Phone number type (in my case is Direct Routing), enter the DID without + sign, then enter Phone number extension. As long as extension is different between the users, you can assign same DID to multiple users.

Since the I created dialplan to accomodate users who are dialing extension numbers instead (usually for those who just migrating traditional pbx to Teams), the dial will never hit SBC. Once an extension dialed by the user from same tenant, the number will be translated to full DID (including ext), Teams will automatically search into the tenant Teams.