On 01/19/2011 04:55 AM, Alex Balashov wrote:
You'd need to post the SIP capture, but it sounds like Kamailio is not associating the ACK with any known transaction, perhaps because the ACK has an unexpected RURI, Via branch parameter, or CSeq number.
To clarify: technically, ACK is a separate transaction. But end-to-end ACKs are associated with the TM state machine, which means Kamailio is supposed to know what is being ACK'd.