We have Hybrid calendar setup for our room systems. We also have Pexip on premise. When scheduling a Pexip meeting it contains the dial struing to join the meeting, where the SIP URI in the meeting invite looks like this:email@example.com. Seems the Webex Hybrid Calendar is altering the SIP URI to firstname.lastname@example.org removing the important confid. So no way to recover this on the VC endpoint using macros. So OBTP will not work for this type of meetings. Would be nice if the Webex Hybrid Calendar would not alter the SIP URI, ie check and remove "." , "**" and other special characters.