1. Accounting Guide
  2. Diameter Accounting
  3. ACR Event Records
  4. Event ACRs Generated for Receipt of SIP Messages

Event ACRs Generated for Receipt of SIP Messages

An Event ACR is issued when the following SIP messages are received:

  • 200 OK message for a SIP Register from the IMS core.
  • SIP Final/Redirection Response 3xx
  • SIP Final Response (4xx, 5xx or 6xx) — this indicates an unsuccessful session-unrelated procedure.
  • SIP Final Response (4xx, 5xx or 6xx) — this indicates an unsuccessful SIP session set-up.

This example call flow shows an Event ACR that is created due to the reception of a 3xx SIP message. In this example the call fails after being redirected.

The 3xx SIP message receipt Event ACR is described above.

Event ACR Created Upon Reception of a 3xx Message Followed by Call Failure After Redirect

This example call flow shows an Event ACR that is created due to the reception of a 3xx SIP message. Then it shows a Start ACR upon reception of a 200OK. In this example the call succeeds after being redirected. The generate-start is OK.

The 3XX SIP receipt Start ACR event ACR is described above.

Event ACR Created Upon Reception of a 3xx Message Followed by Call Success After Redirect

This example call flow shows a Start ACR being sent when an Invite is received and an Interim ACR that is created due to the reception of a 3xx SIP message. In this example the call succeeds after being redirected. The generate-start is Invite.

The Start ACR Interim ACR call flow is described above.