Calling PSTN numbers from Bot

Milan Zivic 1 Reputation point


I m trying to initiate a call from bot and having issues with calling PSTN numbers. The bot is calling perfectly Teams user, playing media files and receiving notifications via subscribed callback function, but calling PSTN number failed with terminated call as shown in the screenshot. Application instance is also defined and the phone number is assigned to the bot.

Is there anything I am missing here?



Azure AI Bot Service
Azure AI Bot Service
An Azure service that provides an integrated environment for bot development.
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Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. Milan Zivic 1 Reputation point


    This is detailed notification received by callback function:

    "message":"Server Internal Error. DiagCode: 500#560500.@"

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  2. Milan Zivic 1 Reputation point

    Problem solved with proper use of SBC based phone number.

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