Sorry for the confusion,
The outbound traffic (10.10.7.3 to "internet) now works fine with the SNAT and iRULE
The inbound traffic (123.123.123.111 to device) does not work.
Originally I was using a NAT because it was simple and all encompassing. Inbound calls to the teleconference unit worked fine. The outbound did not work, some of the time. Adding the iRULE to the outbound VS fixed the outbound traffic to always work but I had to remove the NAT to add the SNAT pool. Can't have the same IP in both places. At the moment I am trying to reproduce the NAT rule with VS instead. Is there a tech article somewhere that walks through a 1-1 IP based VS by any chance?