osmo-mgw has no proper introspection via VTY + CTRL
osmo-mgw should be able to show us all relevant information about each endpoint (and each connection on each EP) in the VTY
The 'show mgcp' VTY command already does most of what is being asked for in this issue.
I have added a VTY command which allows filtering the information shown by 'show mgcp' for a specific endpoint:
Such filtering could be quite useful for non-human VTY users, such as automated tests etc.
osmo-mgw does not seem to have a CTRL interface yet so nothing could be implemented there for this issue.