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Service Providers Can Configure Single SBC/Single Cert for Multiple Customers for Microsoft Teams Direct Routing

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A great practical step forward for PSTN Carriers and Microsoft Partners that offer Direct Routing as a service for multiple customers.

A carrier can:

  1. Deploy the SBC and configure it for the hosting scenario according to the instructions from the certified SBC vendors.
  2. Register a base domain name in the carrier tenant and request a wildcard certificate.
  3. Register a subdomain for every customer, which is part of the base domain.

The SBC requires a certificate to authenticate the connections. For this SBC hosting scenario, the carrier needs to request a certificate with SAN *.base_domain (for example, *customers.adatum.biz). This certificate can be used to authenticate connections to multiple tenants served from a single SBC.

Full details of how to configure the SBC for this hosting scenario are here: https://docs.microsoft.com/en-us/microsoftteams/direct-routing-sbc-multiple-tenants#create-a-trunk-and-provision-users

About the author

Tom Arbuthnot

A Microsoft MVP and Microsoft Certified Master, Tom Arbuthnot is Principal Solutions Architect at Microsoft Collaboration specialists Modality Systems.

Tom stays up to date with industry developments and shares news and his opinions on his blog, Microsoft Teams Podcast and email list. He is a regular speaker at events around the world.

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Tom Talks Microsoft Teams and Microsoft 365 Collaboration news and opinions