>From a purely networking perspective, the problem you are describing can not be the firewall. Assuming they are all on the same vlan and subnet, it has to be either the switch, phone, or asterisk server.
If swapping the firewall actually does change behaviour (and it's not just a coincidence) then something else is wrong on your network. Once the devices get an IP address, any traffic destined to another device on the same subnet will not touch the gateway (firewall), it will stay on the switch (that's what switches do). Though keep in mind an initial DNS lookup may exit the subnet even if the resulting IP address is still local. I see another response regarding NAT settings in Asterisk and that sounds very likely. Either the phone or Asterisk is mangling SIP packets in some way with the intention of traversing a NAT device (firewall) but you aren't actually doing NAT so it's causing Asterisk to assume the wrong IP address for the phone and it loses contact. John --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
