What CODEC is used in Phase 2 P25 radios?

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Multiple Choice

What CODEC is used in Phase 2 P25 radios?

Phase 2 P25 radios use the AMBE codec for vocoding. This codec (and its later AMBE+2 variant) is designed for efficient digital voice in narrow channels, which is essential for Phase 2’s two-slot TDMA operation within a 12.5 kHz channel. Using AMBE provides robust voice quality and better spectral efficiency, enabling multiple users to share the same channel more effectively. The other options aren’t codecs used for Phase 2 P25 voice. IWCE is a trade show, and IMBC/IMMM are not standard P25 vocoders.

Phase 2 P25 radios use the AMBE codec for vocoding. This codec (and its later AMBE+2 variant) is designed for efficient digital voice in narrow channels, which is essential for Phase 2’s two-slot TDMA operation within a 12.5 kHz channel. Using AMBE provides robust voice quality and better spectral efficiency, enabling multiple users to share the same channel more effectively. The other options aren’t codecs used for Phase 2 P25 voice. IWCE is a trade show, and IMBC/IMMM are not standard P25 vocoders.

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