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dff01c07f1
- Use the newly introduced FTDM_SPAN_USE_PROCEED_STATE flag and FTDM_CHANNEL_STATE_PROCEED.
- Update ftmod_libpri's state machine table (taken from ftmod_sangoma_isdn).
- Move pri_destroycall() to HANGUP_COMPLETE state.
- Try to get a little bit closer to the ISDN states by using pri_acknowledge() in RINGING,
pri_progress() in PROGRESS and pri_proceeding() in PROCEED state.
- Go to PROGRESS_MEDIA in on_progress() only if there is inband indication available, go to
PROGRESS if not.
- Go to RINGING state in on_ringing() and remove PROGRESS_MEDIA check.
NOTE: One libpri error message and a VETO (PROGRESS -> RINGING) warning to investigate,
but changes seem to work fine nonetheless.
Tested-by: SparFux (#freeswitch / #freeswitch-de @ irc.freenode.net)
Signed-off-by: Stefan Knoblich <s.knoblich@axsentis.de>