The best way to elicit feedback from communities is to include diverse voices from that community on advisory councils. The DOL watchword at all levels should be, "Nothing about us without us."
One surefire way to foster communication is to create a welcoming, respectful, and collaborative atmosphere. Without this, nothing will help since the community will soon see the futility of bothering to move forward in that direction. On the other hand, success in creating a fruitful atmosphere will breed its own success. Word will get around and outreach will be unnecessary.