Customer has 7.036 system with remote 1608l. Lan 2 was static public IP with SCN to two other locations (not me) but we have put in a firewall since it was being hacked. Will the 1608 phone go through a firewall or not? TCP 1720, Udp 1719, udp 49152- 53246 all forwarded to the IPO lan2. So far no luck and the recommendation is to get a 9608.