SIP School Certified Associate (SSCA) Practice Test

Using the G.729 codec is particularly advantageous when you need to support multiple simultaneous calls over a limited bandwidth. G.729 is designed to provide efficient voice compression, reducing the amount of bandwidth required for each voice call. This makes it an ideal choice for environments where bandwidth is constrained, allowing more concurrent calls to be handled without significant degradation in call quality.

The codec achieves a low bit rate (typically around 8 kbps), which means it can facilitate a higher number of calls simultaneously compared to other codecs that consume more bandwidth. In scenarios like VoIP services, where operators need to maximize resource usage and maintain voice quality, G.729 serves a critical role in ensuring efficiency and scalability.

Other scenarios listed, such as high bandwidth applications or video conferencing, require codecs that can handle higher data rates or incorporate additional video data, which G.729 is not designed for. Similarly, high-fidelity audio streaming is better served by codecs that prioritize audio quality over compression efficiency, unlike G.729, which sacrifices some audio fidelity for bandwidth savings.