Existing accounting functions on the AAA architecture mainly deal with metering connection time between set up and tear down. This paper presents the VolP-associated accounting architecture which enables quality based billing. The NAS functions as an ...
Existing accounting functions on the AAA architecture mainly deal with metering connection time between set up and tear down. This paper presents the VolP-associated accounting architecture which enables quality based billing. The NAS functions as an end-user server to collect accounting packets on a real-time basis and as an accounting client to send a batch to the AAA server. In order to explore the operational burden of placing the function of VolP-associated data collection on the NAS, we will develop an analytical model to investigate the effects of the frequency of accounting packet generation, the number of active devices, and NAS processing capabilities on the performance of the packet loss probability and the packet buffering delay at the NAS buffer. Then, we discuss these results focused on the maximum number of active devices the NAS can accommodate for a certain condition.