Configuring Inter-tenant Federation for the Lync Server 2010 Multitenant Pack for Partner Hosting

This article describes how to configure inter-tenant federation for tenants configured on the same Lync Server 2010 Multitenant Pack for Partner Hosting. This is necessary to resolve an issue with the Lync Server Multitenant Hosting Pack where tenant users cannot place PSTN calls to users in other tenants within the same deployment, unless federation between those tenants is enabled.

Author: Randall DuBois

Publication date: June 12, 2012

Product version: Lync Server 2010 Multitenant Pack for Partner Hosting

Introduction

There is an issue with the Lync Server 2010 Multitenant Pack for Partner Hosting where users, within different tenants configured on the same Lync Server Multitenant Hosting Pack deployment, cannot place calls to each other unless both tenants are configured to allow inter-tenant federation. This issue only affects users of tenants within the same Lync Server Multitenant Hosting Pack deployment. To work around the issue, enable federation between the tenants. To configure federation between tenants, run the CsTenantFederationConfiguration cmdlet and include the AllowFederatedUsers parameter with a value of True. This issue will be resolved in a future release of the Lync Server Multitenant Hosting Pack release.

Configure Federation Between Two Fully-Hosted Tenants

You can configure federation between two fully-hosted tenant organizations. To configure federation, add each tenant to the other tenant’s Allow list. For example, if you want to enable federation between mydomain.com and yourdomain.com, use the following steps.

Add "mydomain.com" as an ALLOWED partner on "yourdomain.com"

$d1 = New-CSEdgeDomainPattern -Domain "mydomain.com"

$a = New-CSEdgeAllowList -AllowedDomain @{replace=$d1}

Set-CSTenantFederationConfiguration -Tenant <yourdomain.com's GUID> -AllowedDomains $a

Do the converse at "mydomain.com". Add "yourdomain.com" as an ALLOWED partner on "mydomain.com"

$d1 = New-CSEdgeDomainPattern -Domain "yourdomain.com"

$a = New-CSEdgeAllowList -AllowedDomain @{replace=$d1}

Set-CSTenantFederationConfiguration -Tenant <mydomain.com's GUID> -AllowedDomains $a

This enables federation for users in in each tenant SIP domain.

For more detailed information about configuring inter-tenant federation, see “Configure Tenant Federation Settings” in the Microsoft Lync Server 2010 Multitenant Pack for Partner Hosting Deployment Guide.

Summary

After you have configured the tenants in your deployment for inter-tenant federation, users in those tenants will be able to place PSTN calls to users in other tenants in your deployment.

For more detailed information about the Lync Server 2010 Multitenant Pack for Partner Hosting, see the Lync Server 2010 Multitenant Pack for Partner Hosting resources page at Microsoft Lync Server 2010 Multitenant Pack for Partner Hosting Resources.

Additional Information

To learn more, check out the following articles:

Lync Server Resources

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Keywords: Lync Server 2010 Multitenant Pack for Partner Hosting; Lync Hosting Pack; Hosted Lync