Which two sources are responsible for H.323 network voice transmission delays?

The correct selection highlights two fundamental components that contribute to voice transmission delays in an H.323 network environment.

Compression delay arises during the process of encoding audio signals into a digital format suitable for transmission. This transformation requires time, as the audio data must be compressed to facilitate efficient transfer across the network. Therefore, the more complex the compression algorithm, the more significant the compression delay, impacting real-time voice communication.

DSP delay, or Digital Signal Processing delay, is another critical factor. DSP involves manipulating audio signals to prepare them for transmission, which also takes time. The processing of the audio data includes various tasks such as echo cancellation, noise reduction, and other signal enhancements, all of which can contribute to delay. The efficiency of the DSP hardware and algorithms directly affects how quickly voice data is processed.

Together, compression delay and DSP delay significantly influence the overall latency of voice communications in an H.323 setup. Understanding these delays is crucial for network engineers and technicians to optimize communication systems and ensure minimal disruption in voice services.