I've got a RLS11 IPO with about 25 1408s and sip trunks. The basic issue is there is always a 2 / 3 second delay on calls. The firewall is a sonicwall that is maintained by another company. The internet connection is 100meg Ethernet leased line. I gave the IPO a public IP address and bypassed the firewall and there was no delay at all (I can't leave it like that so it is now behind the firewall again). Basically that's where my responsibility ends as it proved the firewall is the issue. As predicted the firewall maintainer is blaming the IPO. So, I'm pretty much stuck. I had the sip provider run some traces and they could see the sip packets were getting 'PAT' applied to them and port 5060 was getting translated. I did doffer up this info but didn't have much luck. We have confirmed with the traces that SIP ALG is not running. Does anyone have any ideas on where I could point the firewall maintainer?