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Explanation of colors
Queried object
Refers to a base object, e.g. a base protocol or interface.
Refers to a child of the object.
Refers to a dependency. If it changes then this might be impacted as well.
This is an extra visible attribute of the object.
The given object refers to this object. Referrals are only of the main object.
message
UDR
description
User Data Request
protocol
DIAM
Diameter - Protocol description.
message
UDR
User Data Request
message
UDA(ACK)
Positive User Data Answer
message
UDA(NACK)
Negative User Data Answer