Abstract

In the digital era, VoIP communication technology is popular due to its low cost and good voice
quality. At the AirNav Padang, communication is still manual using conventional telephones, which is
considered expensive and less effective. The solution is to implement VoIP through the local network, utilizing
computers, smartphones, headphones, and analog phones for cost efficiency and cross-division
communication. Similar research has addressed cost issues with VoIP. However, VoIP implementation
requires good Quality of Service (QoS) to avoid delays, jitter, and packet loss that can disrupt communication.
This research focuses on the design and analysis of QoS for a VoIP server with Briker, trunk, and IVR at the
Perum LPPNPI Padang Branch Subsidiary Office. QoS measurements show an average delay of around
22.754 ms, an average jitter of about 3.572 ms, and an average packet loss of about 0.04% for calls between
clients. Meanwhile, for calls with trunk and IVR, the average delay is approximately 21.756 ms, the average
jitter is around 5.402 ms, and the average packet loss is about 0.05%. This solution can optimize cross-division
communication with low costs and high efficiency.