Call issues

Hi, im currently trying to figure out connecting two boxes, but before that i have encountered a weird issue, whenever i try to call another extension (i am using Ekiga as my softphone) it would just ring, and why accept the call on the other PC, it would just do nothing. i think, after 8-11 secs the call is being dropped.

im new to freepbx since i had a hard time configuring SIP/IAX pairing in asterisknow. in freepbx, when i check the SIP/IAX trunks both of them are online so i assume that there is no problems.