Codecs in mobile networks are used to encode and decode the media streams of the voice or video calls. This allows for efficient transmission and playback for them.

Different codecs involve trade-offs between factors like audio/video quality, file size, processing power, and compatibility with different devices and platforms.

Network operators work to optimize the use of codecs to provide the best possible user experience, while considering the constraints and capabilities of the mobile network infrastructure.

The choice of codecs in mobile networks depends on factors such as the network generation, bandwidth availability, device capabilities, and the specific application or service requirements. Newer generations of mobile networks, such as 4G and 5G, support more advanced and efficient codecs. This is to deliver high-quality multimedia experiences to mobile users.

Examples for the codecs in mobile networks are,

• AMR (Adaptive Multi-Rate): A widely used codec for speech in 2G and 3G mobile networks. It provides good quality speech at low bit rates.

• EVS (Enhanced Voice Services): A high-quality speech codec introduced in 4G/LTE networks, providing improved speech quality compared to earlier codecs.

• H.264/AVC (Advanced Video Coding): A widely adopted video codec used in 3G, 4G, and 5G networks, providing high-quality video at various bit rates.