[Freeswitch-users] Difference between last_bridge_to and signal_bond

[Victor Chukalovskiy]

Hello,

Looking at this for the purpose of putting a and b leg CDRs together:
http://wiki.freeswitch.org/wiki/CDR#Putting_Together_CDRs

I noticed that ${last_bridge_to} and ${signal_bond) are always the same 
in my use scenario.

Is there any real difference between the two and if so which on is 
better to use?

Thank you,
-Victor