Add some debug messages to make it clear what RTP bridging functionality is in use.


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395205 f38db490-d61c-443f-a65b-d21fe96a405b
func_channel: dtmf_features setting

Allows reading andsetting dtmf features via a channel function
CHANNEL(dtmf_features)

(closes issue ASTERISK-21876)
Reported by: Matt Jordan
Review: https://reviewboard.asterisk.org/r/2648/


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395215 f38db490-d61c-443f-a65b-d21fe96a405b