Hi, I am still struggling to get SIP (session initiation protocol) VoIP software (SIP Express Router + XTen/KPhone/Linphone) and hardware (Grandstream SIP IP Phone) to work. The best result I have achieved is when I can call (or someone call me), hear sound, but my talk is not transmitted for weird reason. I have quite standard configuration - two-card Linux PC with shorewall (one static external IP + static local IPs 192.168.0.xxx). It looks like something is wrong with NAT or masquarading. May be someone will be kind to e-mail their Shorewall configs? My e-mail is andreil1@starlett.lv Thanks in advance. ********************************************* * Best Regards --- Andrei Verovski * * Personal Home Page * http://snow.prohosting.com/guru4mac/ * Mac, Linux, DTP, Development, IT WEB Site *********************************************