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2.2 Identify the appropriate collaboration codecs for a given scenario




In a Voice over IP (VoIP) or video conferencing scenario, codecs (coder-decoder) are used to compress and decompress audio and video data for efficient transmission over the network. The appropriate codec for a given scenario will depend on several factors such as network bandwidth, desired audio or video quality, and the devices being used.



Here are a few examples of codecs that are commonly used in collaboration scenarios:

  • G.711: This is a standard codec for PSTN (Public Switched Telephone Network) communication. It provides high-quality audio with a wide frequency range and low latency, but it also requires a high bandwidth.

  • G.722: This is a standard codec for wideband audio communication. It provides high-quality audio with a wide frequency range and low latency, and it requires less bandwidth than G.711.

  • G.726: This is a standard codec for narrowband audio communication. It is typically used for low-bandwidth connections and provides lower audio quality than G.711 or G.722.

  • G.729: This is a standard codec for low-bandwidth audio communication. It provides lower audio quality than G.711 or G.722, but it requires less bandwidth.

  • H.264: This is a standard codec for video communication. It provides high-quality video and low latency, but it requires more bandwidth than other video codecs.

  • H.263: This is a standard codec for video communication. It provides lower video quality and more latency than H.264 but it requires less bandwidth.



When choosing a codec, it is important to consider the bandwidth available on the network and the desired audio or video quality. In a low-bandwidth scenario, a codec like G.729 or H.263 might be more appropriate, while in a high-bandwidth scenario, a codec like G.722 or H.264 might be more appropriate. Also, codecs support could vary depending on the device or software you are using.


It's worth noting that newer codecs like Opus and VP8 are becoming more widely supported in collaboration scenario and have the potential to provide better audio and video quality while being more efficient in term of bandwidth usage.

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