Can I Use Direct Routing for Dial-in Conferencing Numbers?
Currently as of this moment, the answer here is no. Service numbers including conferencing numbers are not supported via Direct Routing. Conferencing numbers must be ported into Microsoft or use the default service number allocation that Microsoft provide for conferencing with respect to Microsoft Teams
Mark is an Independent Microsoft Teams Consultant with over 15 years experience in Microsoft Technology. Mark is the founder of Commsverse, a dedicated Microsoft Teams conference and former MVP. You can follow him on twitter @UnifiedVale