Teams Meeting/Conference dial out with direct routing

Update: 14.07.2021: The feature is no longer declared as a preview by Microsoft. Therefore, it can now also be used in productive operation.

The feature is still in preview on the part of Microsoft.

https://docs.microsoft.com/de-de/microsoftteams/audio-conferencing-on-network

Um dieses Feature testen zu können muss natürlich bereits eine Direct Routing Installation vorhanden sein. Microsoft unterstützt die folgenden CMDlets.

New-CsOnlineAudioConferencingRoutingPolicy
Set-CsOnlineAudioConferencingRoutingPolicy
Get-CsOnlineAudioConferencingRoutingPolicy
Grant-CsOnlineAudioConferencingRoutingPolicy
Remove-CsOnlineAudioConferencingRoutingPolicy

Later, the new policy will be coupled with the PSTN Usage. Let’s have a look at the PSTN Usages.

PS C:\> Get-CsOnlinePstnUsage


Identity : Global
Usage    : {Paderborn_default}


Adding a PSTN Usage.

Set-CsOnlinePstnUsage -Identity Global -Usage @{Add="Paderborn_default"}

So that the PSTN Usage can be coupled with the SBC/Gateway, the OnlineVoiceRoute is created.

New-CsOnlineVoiceRoute -Identity "Paderborn_default" -NumberPattern "^(\+\d*)$" -OnlinePstnGatewayList "sbc01.teamsnet.de" -Priority 1 -OnlinePstnUsages "Paderborn_default"

Now the new dial-out policy must be created and assigned to the user.

New-CsOnlineAudioConferencingRoutingPolicy "DR_Dialout_Paderborn" -OnlinePstnUsages "Paderborn_default"
Grant-CsOnlineAudioConferencingRoutingPolicy -Identity "SIPADDERSS" -PolicyName "DR_Dialout_Paderborn”

After some replication time, the outgoing calls of a conference are now routed via Direct Routing and thus via the own SIP trunk. Of course, the SIP trunk provider should support CLIP no screening here, so that when a user calls back, this call should end up back at the Teams Conferencing system and not locally at the central number.

So now, if the SBC is configured accordingly, the caller will also receive the Frankfurt Teams conference dial-in on the end device.

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