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MS Teams Direct Routing - Setup From CallTower

Setup Teams Direct Routing from CallTower :


  • Must be on CallTower's Microsoft Partner Network for Office 365 Licenses
  • Must have an Office 365 Admin Account
  • Must have access to External DNS Host


  • Point Skype for Business/Teams DNS records to Office 365 (DNS records can be found under “domains” section in 365 Admin Portal
  • Assign correct Office 365 Licenses for each user (Phone System License is required)
  • E3 licenses need the Phone System License as an add-on
  • E5 licenses have the Phone System License included
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