2009/7/14 Carlos A. Alvarez carlos.alvarez@commxinc.com:
I currently use the dispatch module with 302 redirection to load balance A2Billing servers. If I use either cr or dispatcher with ds_select_dst to load balance, the problem I have is that when the SIP request is forwarder to A2Billing, it appears to be coming from the same source ip address. This is a problem when I am wholesaling IP to multiple carriers, since each carrier has its own source ip address.
In the proxy add a header "Source-IP: XXX.XXX.XXX.XXX" and use it in Asterisk for billing. Perhaps this is not feasible if A2Billing depends on peers (now there is just one peer: Kamailio).