Hi, I'm new to Kamailio

I need to have a kamalio as sip server which do a trunk to NGN Center(like a friend peer trunk in freepbx).

I need to outgoing calls go through kamailio and forwarded to ngn(multi did values, a range of numbers ...)

extensions will register on kamailio

I need incoming calls forwarded to an extension or a pbx server, doesn't matter and both are good ...

that server will have heavy traffic about 1000 concurrent calls...

I tried a successful kamailio installation but I don't know how to config that for my purpose.

even I tried installation of dsiprouter over a fresh debian 9 but stopped on pyspark installation.

please give me your helps, advises, hints or ideas!

best regards