http://corp.deltathree.com/technology/nattraversalinsip.pdf Very good read for those of us who need pictures and "dumbed down" versions of technical info. -Matthew -- ------------------------------------------------------------------------ Matthew Boehm, IT Director Cypress Telecommunications mboehm@cytelcom.com 3838 N. Sam Houston Parkway E #400 T: 832-200-8640 x3044 Houston, TX 77032 My girlfriend was recently diagnosed with multiple personality disorder; When she called yesterday, my CallerID box exploded. ------------------------------------------------------------------------