Commits
Moises Silva committed 1db40e60e46
freetdm: improved logic to enable/disable EC on call start/stop
- MFC-R2 requires tone signaling that gets screwed sometimes
if the EC is enabled during call setup.
- EC is now enabled only when switching to a state requiring
media (UP and PROGRESS_MEDIA)
- The logic is aware of EC persist option in Wanpipe
- Improved logging in ftmod_wanpipe to print EC state on startup