[SR-Users] Calculate call duration

[Duarte Rocha]

Greetings,

How sould a call duration be calculated?

Let's say the call creation on Kamailio as a proxy has those steps :

1 - Invite is received
2 - Provisional responses
3 - 200 OK is received
4 - ACK to 200 OK is received
5 - BYE is received
6 - 200 OK to BYE is received

Should the duration begin to count on step 3 (200-Ok Received) or 4 (ACK
received) ?
Should it end on the step 5 or 6?


ACC module tells me that start time for CDR can either be on dialog
creation or confirmation -
https://www.kamailio.org/docs/modules/5.2.x/modules/acc.html#acc.p.cdr_start_on_confirmed
- What is the dialog creation ? Is it when the INVITE is received ?
- According to DIALOG module, a confirmed dialog can be "Waiting for ACK"
or "Active Call". Which one is used by acc module?
Best Regards,
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