We have UCM6.0 and it seems to work only in G711u-law codec. In our region, G711a is preferable, and our ISP has their setup tested in G711a. However, UCM does not handle correctly calls in G711a. As soon we configure IPtoIP gateway Cisco 3845 to use G711a in any direction - imcoming calls fail.
Do we miss something here? How do we make UCM support G711a?