Vidyo meeting extensions are numerical identifiers which are used to connect to a Vidyo meeting from a phone or H323/SIP device. Here is how to find them:
If the Vidyo meeting was created in Indico
Then you wil find the meeting extension directly on the corresponding Indico page. Simply click on the "More Info" link on the Vidyo service section of the page
If you were invited through the standard Vidyo invite mail message
Then the extension is displayed after "call me at"
If you were invited by mail but the mail does not contain the meeting extension
Contact the meeting organiser to ask for the extension
Getting the meeting extension of my own Vidyo room
Log in the Vidyoportal. Your meeting extension is your Vidyo user Id which appears on your portal home page.