Apparently this is a fairly recent feature of automake and is not
present on at least CentOS5.

FS-5136 set ringback and bridge_early_media=true and it should fall to playing the ringback when the 180 hits

FS-5109 --resolve

FS-4709 --resolve, not adding the change to switch_rtp I want to have that log line there, don't make vanity changes mixed in with code changes

FS-5011 --resolve if you use record_session with a filename with no extension it will record 2 files with that base-name and with extensions -in.XXX and -out.XXX where XXX is the codec name