Have you ever worked a project where resources complained that roles were not well defined? Communication was not satisfactory? Goals were not clear?
You may need to review your decision making process.
When having project calls with virtual teams, specially thru phone, you may not be able to ensure everyone is actively participating or understanding what’s being said.
It can happen due to numerous reasons, as not dedicated resources working other tasks, individuals that speak different languages having trouble to get your message or simple technical problems with the phone and connection speed.
To avoid these situations become a problem to the results delivering, project manager needs to ensure all work decisions are communicated, well documented for review and in a place all team members have access.
It can be a wiki or mural created specifically for the project. I don’t suggest the use of emails, cause communication can be lost due to the volume received by team members for other types of work.
Ensure all the team is communicated and understands the paths project is taking will help them understand what’s expected from their work, improve communication and provide individuals with a clear vision of project goals.