"early bridging" in high_level_dial sample

[daniele77]

In the high_level_dial and low_level_dial sample, the order of the operations should be modified to first add the channels to the bridge and then dial the outgoing channel. In this way the caller can hear the media before the called answers.

See http://blogs.asterisk.org/2016/08/24/asterisk-14-ari-create-bridge-dial/