Microsoft Teams Phone Changes - Number Routing Logic Change
If you are an O365 Admin, you may miss this or may not understand the MC847014 from the Message Center. Do contact your Direct Routing Service Provider/Teams connector provider or DRAAS provider. Around the end of February 2023, Microsoft will be changing how numbers dialed by Teams users or arriving from the PSTN match the number assigned to users. This process is often referred to as Reverse Number Lookup (RNL). The change applies only to users with an assigned phone number where the last several digits of the base number are also added as the extension. For example, +14025557334;ext=334, where 334 is both included in the base number and as the extension. You are receiving this post, because our telemetry shows that you have users configured with phone numbers containing extensions identical to the last n digits of a base number such as +14025557334;ext=334. The users configured with this type of phone number are either Teams users or Skype for Business Server on-premises users...