[SR-Users] Loadbalancer/dispatcher with dialog/cnxcc

Hi all Following situation 1 dispatcher/loadbalancer getting all the inbound traffic and sending it to 3 different gateway (round robin). The loadbalancer has no (or even very few) business logic. Just "in" - split to different gateway - "out" 3 sip gateway doing all the business logic like auth, modifications on header, different checks, ... These 3 gateways use the same database (cluster) with routing tables and so on. A call gets terminated to a carrier through these sip gateway. Now I would like to implement call limiting (no of calls) by using either only dialog module or cnxcc module based on "source ip" or later on "cli". My problem: A call from one source ip can be sent to the (3) different sip gateway - so not all calls are processed by the same sip gateway. How can I ensure, that only a certain number of calls are allowed - even if they are split up on the 3 different gateway? Or do I need to implement this kind of business logic on the dispatcher/loadbalancer? That would not make much sense, because this is just a "stupid" machine... Thanks for helping Oli