DRL-Initiated Answer Message Processing

Answer messages can also be initiated by DRL for a variety of reasons. For example, when DRL is processing a Diameter Request message, it may encounter a routing failure or an operator instruction (for example, PRT rule) which requires abandoning transaction routing and sending an Answer response.

On receipt of a DRL-initiated Gy/Ro Diameter Answer, OC-DRA updates the Diameter Answer's Result-Code AVP using the Unable To Route Result-Code and Error-Message AVP and sends it to the downstream peer that initiated the Diameter transaction.