Q. Which AVP in Charging contains all CDR (Call Data Record)?
a) Subscription AVP
b) Service Context AVP
c) Accounting Record Type
d) Service Information AVP
Check 🔎
Correct answer: Letter d.
The Service Information AVP is the container AVP in Diameter charging that holds the detailed Call Data Record (CDR) information, including service-specific charging data.
Q. Which AVP in Charging contains all CDR (Call Data Record)?
a) 
“Subscription AVP”
→ Incorrect. This AVP relates to subscriber details, not CDR data.
b) “Service Context AVP”
→ Incorrect. This identifies the service type but does not contain full CDR data.
c) “Accounting Record Type”
→ Incorrect. This AVP indicates the type of accounting record (start, interim, stop) but doesn’t contain CDR details.
d) 
“Service Information AVP”
→ Correct. This AVP contains the complete service-specific CDR information.
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