Summary
When accessing reports in Aircall, you may see [No associated user] being reported in some tables. This is because no user could logically be attributed to the call in the report.
Further Details
The user associated with a call is defined as the user who is connected when the call ends, for both inbound and outbound calls.
Inbound Calls
Inbound calls will not be associated with a user when the call is unanswered/missed, as no user was connected to the call when it was ended.
Outbound Calls
An inbound call that connects to an IVR and is forwarded to an external number will be shown in reports as an outbound call with no user assigned. Because the call is being forwarded out of Aircall, and to an external number, the call direction will be notated as outbound. Because the call skips connecting to any Aircall users in this case, and is connected number-to-number instead, there will also be no user assigned.
The same is true for calls forwarded externally via the API.