the pcrf 18 handling a session may receive notification that the session is to be aborted in such an event the pcrf 18 generates an abort session request message which is sent to the diameter proxy agent 16 and then to the radius gateway 34 the radius gateway 34 translates the abort session request message into a disconnect request message and sends the disconnect request message to the wireline device 30 the wireline device 30 should respond to the disconnect request message by generating a disconnect ack message or disconnect nak message and sending the generated message back to the radius gateway 34 the radius gateway 34 receives the disconnect ack message or the disconnect nak message and translates the incoming message into an abort session answer message the abort session answer message is sent to the diameter proxy agent 16 and then to the pcrf 18 if the response from the wireline device 30 received by radius gateway 34 is a disconnect nak message with a service type attribute value of u201c authorize only u201d and with an error cause attribute value of u201c request initiated u201d the abort session answer message generated by the radius gateway 34 has a result code avp of u201c diameter_limited_success u201d subsequently the radius gateway 34 should receive an access request message from the wireline device 30 the access request message having a service type of u201c authorize only u201d the radius gateway 34 translates this into an aa request message with an auth request type avp of authorize_only the aa request message is sent to the diameter proxy agent 16 and then to the pcrf the pcrf responds with an aa answer message and depending on the value of the result code avp in the aa answer message the radius gateway.