Execption at Call notification : "MediaControllerAddParticipantFailed", Code-500, SubCode-7112

Hi,

I am facing few concerns related to 'ServiceFQDN' value.

As far I understand:

• The value of 'ServiceFQDN' should match the DNS value of the certificate whose thumbprint we have provided.
• Also, the value of 'ServiceFQDN' should be the Media bot url which get resolved through Ngrok TCP tunnel.

I am bit confuse in linking these two points as I already have a CA certified certificate in my organisation domain, I have used that certificate and provided it's DNS value (development.domain.com) in my 'ServiceFQDN' value.

Now, When I am trying to make call request first I got a notification of call state = Establishing but after few seconds I got another notification of call state = Terminated:

It seems it is unable to add bot as a participant.
I have register a bot on Microsoft Bot Framework and provide it the app_id of my registered app on azure portal.

Concerns:

1. What is base Bot url ? (As the only url I have provided during Bot registration is its 'MessageEndpoint' Url)
2. What is a valid value for 'ServiceFQDN' ? (As in some article it is been assigned as bot base Url)
3. If I use the Bot base Url as 'ServiceFQDN' value then it will not going to match with my existing certificate thumbprint value and gives a error.

Can you please help me out in figuring these points.

No repository file, test, or entry point is identified. Start by reviewing the ServiceFQDN, certificate thumbprint, Bot Framework registration, and MessageEndpoint details against the MediaControllerAddParticipantFailed notification. Done would require an agreed configuration diagnosis, but the issue provides no implementation target.