Performance Evaluation of VoIP Services in PLN Centralized Control Center: A Data-Calibrated Simulation of MCC-DRC Network Architecture

Abstract

This paper presents a performance evaluation of Voice over Internet Protocol (VoIP) services in PLN's centralized Main Control Center-Disaster Recovery Control Center (MCC-DRC) network architecture. The performance of MCC-DRC Network is evaluated using QoS parameters including delay, jitter, throughput, and packet loss. A data-calibrated simulation approach was applied using OMNeT with INET framework, where the traffic model was calibrated from PRTG Network Monitoring observations and supported by field performance assumptions from EtherSAM EXFO measurements based on ITU-T Y.1564. The proposed architecture was developed with a higher backbone capacity consideration, including a 1 Gbps design basis, to represent the communication demand after centralization. The simulation was conducted under 20%, 50%, and 100% traffic load scenarios for both normal and failover-related operating conditions. Under normal operation, the average delay ranged from 2.495 ms to 3.033 ms, the average jitter remained at 0.001 ms, and packet loss remained 0%. Under failover-related conditions, the average delay ranged from 0.456 ms to 0.546 ms, the average jitter ranged from 0.001 ms to 0.003 ms, and packet loss also remained 0%. Based on the conversational voice criteria in ITU-T G.1010, all evaluated results remain within the acceptable QoS limits. These findings indicate that the proposed MCC-DRC architecture is technically feasible for supporting reliable centralized VoIP communication in PLN's operational control center environment.