[Freeswitch-users] SIT tones and SIP Trunk provider.

Hi, Does Freeswitch detect all of these hangup cases mentioned here [ http://wiki.freeswitch.org/wiki/Hangup_causes] when using it through a SIP Trunk provider? If not, should I put in tone_detect application in the dialplan for detecting the SITs? Won't freeswitch have to depend on the SIP status sent from SIP trunk to know the hangup status? So, I'm wondering if tone_detect will work at all? Please provide your advice. Thanks, Vinuth.