I'm using all sip, no zap, or iax, so I don't know if the same problem exists when using zap, or iax. When device 1 calls device 2, and device 2 blind transfers to device 3, the following happens: The cdr record shows that 1 called 3, and ignores completly the fact that 1 called 2 and 2 called 3. In normal billing I think that the duration of the entire call should be billed to device 1 (even the duration of the transfer), and the duration from the start of the transfer should be billed to device 2 as well. Of course the billing for device 1 should only be done on the rate to device 2. but the billing to device 2 should be done on the rate to device 3, but this has to do with rating. When device 1 calls device 2 and device 1 transfers device 2 to device 3: The cdr record shows 2 records, 1 that device 1 called device 2, and the duration is till the transfer, and 2 that device 2 called device 3. This is inaccurate, since device 2 never called device 3. The billing in this case should be done that for the duration of device 1 to device 2 as one record (so when rating is done, the rating is accurate). The second record should show that device 1 made a call from 1 to 3, so rating can be done according to that. When device 1 calls device 2 and device 2 transfers 1 to conference room 900. and then joins the conference, by dialing 900 again: The cdr will show: 1. Device 1 calling 900 2. Device 2 calling 900 Record 1 shoud record the duration as being live to device 2 (on that rating) until device 1s' channel gets killed. Record 2 should show 2 records for using 900 for device 2, and none for device 1. When device 1 calls device 2, and device 1 transfers to conference room 900. and then hangs up and dials 900 again, the cdr will show: 1. Device 1 calling device 2. 2. Device 2 calling 900, and billable seconds will be 0. 3. Device 1 calling 900 Record one should show device 1 calling device 2, and the billable duration should be as long as device 2s' channel doesn't get killed. Record 2 should show device 1, calling 900, and the billable durations should be as long as 900 is connected with device 2. Record 3 is accurate. Am I wrong in my assumptions? Is there any configs that can change this? or is this a bug?