[Freeswitch-users] How to get info from the b-leg

Hi, I am making a simple bridge between two call legs : Client --(a-leg)--> FS --(b-leg)-->Provider How can I get information like network-address of the Provider, media-address, port used, media port used etc. from the second leg (b-leg)? Is all the information provided by the a-leg available for the b-leg as well? If, yes how can I access it? (and log it to my CDR file eventually)