[SR-Users] Routing calls to a subscribed softphone

Hi I was wondering if any one had any advice or examples for me of how to get a call to be routed to a subscribed softphone. We have 2 boxes in our testing deployment, a load balancer / sbc and a call processing box. Calls come in to the sbc, and then are passed to the call processing box. The call is analyzed and the branch uri is rewritten to a destination address when applicable for the call (this is how we handle routing of calls to certain numbers -- we do this utilizing custom code and a custom db). This works just fine when the destination sip uri is phone number (in which case we do lcr) or if the destination goes to a remote address. However when the destination is a subscriber: sip:[subscriber_name]@[our_domain_name], the call is passed back to the sbc, which passes it to the callprocessing box, back and forth until a too many hops error occurs. The subscriber I am trying to send the call too does show up under "kamctl ul show". I feel like there is something basic I must be missing here. Does any one have any advice for me? Thank you very much in advance. All the best. Will Ferrer