Our freeswitch cdrs billed seconds is always lower than terminating partners billed seconds 20% of the time and at the same time higher than customers cds 15% of the time. Our Investigation reveals that the issue is with freeswitch B2BUA mode of operation. Freeswitch ack 200 ok request from leg B before forwarding it to lea A. At the same time it also ack cancel request from leg A before forwarding it to leg B. These mode results in the discrepancies in the billed seconds. The issue becomes pronounced where we have 60/n billing, Is there any way we can configure Freeswitch to operate in proxy mode? Thanks for your assistance.