What is the recommended minimum SNR for voice over wireless?
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Correct answer: 25.
Why this is the answer
The recommended minimum Signal-to-Noise Ratio (SNR) for reliable voice over wireless (VoWLAN) is 25 dB. This ensures sufficient signal quality above background noise for clear, uninterrupted voice communication. A lower SNR, such as 10 dB or 15 dB, might be acceptable for basic data applications but is insufficient for the real-time, low-latency demands of voice, leading to dropped packets, jitter, and poor call quality. While 20 dB offers improvement, 25 dB is the widely accepted standard to account for environmental variations and maintain a high quality of experience for voice users.
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