I apologize for asking unit questions today and decided to just present the big picture and address what I am trying to get @ holistically.

I want to implement a custom LCR only solution on kamailio. INVITE in 300 out. Nothing else. I expect awesome cps stats that makes we lean towards kamailio rather than throwing up a home grown SIP server and worrying about performance.  

I have the guts of the LCR logic down pat, but todays its manual. In my process I do the following :

1. Check LRN of the requested user. I use dig doing a ENUM call.  
2. Use the requesting user and LRN of requested user to mediate call type. Local or Interstate using LRN check via ENUM call (above) and LCAD data lookup. I use sql query. 
3. Mediate call type Intrastate or International if not Local or Interstate using LERG lookup. SQL query too. 
4. dip into database with requesting user and call type and get N lists by costs ascending. SQL query. 
5. Construct Contact info in db or kamailio. 
6. Send 300 reply will contact having the various routes. 

 I can automate 2 through 6 using Kamailio. Basically xquery with supplied data and deal with the Contact header with data received. 404 or default route if no data received.

I cannot handle the ENUM in kamailio or mysql. The provider does not provide SIP redirect. 

What are my options, besides changing LRN providers?

KD