[Serusers] SIP interconnect best practice

[Iqbal]

Hi

I am looking at exchanging/carrying traffic for a international company, 
who wishes to terminate locally, they want to hand me SIP traffic, now 
what the easist setup for billing on something like this, I dont think 
it needs to pass via SER at all, since they would have done all the 
processing b4 it hit me, hence should I just connect directly to the 
gateway (cisco), and then take care of the billing there.

tks
Iqbal