Troubleshooting connectivity problems between Circuit and a video room system

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You might experience connectivity problems between Circuit and a video room system. These problems may be related to various root causes like:

Configuration issues
Network issues
Issues with the components connected to the video room system
Software issues
License issues

No	Problem	Possible root cause	Suggested problem resolution
1	The welcome screen does not appear on the video room system	Sending data from video room system to Circuit does not work	Check the entered SIP URI address Check if DNS SRV is supported Check if SIP TLS is used Check if the firewall is setup correctly (all required ports are open)
2	DTMF tones are heard but no digits are shown on the welcome screen, while entering the conference PIN	DTMF tone dialing does not work	Check with your IT administrator the settings of the video room system and video call control
3	After entering the conference PIN on the welcome screen, nothing is shown or heard	The video room system is not using a valid certificate (required as Circuit only supports encrypted calls)	Check if the video room system is using a valid certificate
4	After entering the conference PIN on the welcome screen, remote conference participants are heard but no participants or shared content are shown. The following message appears on the video room system: `The maximum number of concurrent Video Room Systems that can join conferences in the domain has been reached.`	The Circuit domain that the conference belongs to does not have available licenses for video room systems	Check with the domain administrator if the necessary licenses for video room systems are available in the domain and not all of them are in use
5	Nothing can be heard	The speakers or headset on the video room system is not working	Check that the speakers or headset are plugged in correctly

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