Hi people. I have 2 cisco 7940, the first is behind a NAT and the second is behind 2 NATs (The one for the LAN and one for Wireless). The two phones worked perfectly until Friday. For some reason the second one stoped registering (chan_sip) and the today none would work. Any ideas on what could be happening? Thanks in advance. Pablo -- Pablo Endres <epablo@comvoz.com> ComVoz Communications USA: +1 954 343-2085 Ext 199 Venezuela: +58 212 7713195 Ext 199 Colombia: +57 1 3256840 Ext 199