sipX to avaya ses server issue

I'm trying to do a lab connection between a sipX (3.10.2 centos ISO) and an avaya ses server. I can receive calls placed from the ses to the sip extension on the sipX but not the other way around. A packet trace shows the sipX is not changing the ip addr in the sip invite to the ip addr of the destination sip gateway i have programmed (the ses), it's just forwarding what is received from the orginating sip phone, which has the sipX IP addr after the TO dialed number (number@sipx.ip.addr). The sipX reports a status 482 loop detected. I've checked around the sipX web config and can find nothing in a programming field to change or modify this, any pointers, assistance, direction?

Expected call flow
avaya sip phone (registerd to sipX)
sip phone dials "1" and 10 digit number
sends invite to sipX (number@sipx.ip.sddr)
sipX matches dial plan "long distance"
send invite to gateway sip trunk defined (ses)

I've tried this with a XLite sip softphone and appear to get the same results.