What technique is used to ensure that voice messages containing unusual words are received correctly?

When transmitting unusual words, difficult-to-spell names, or critical emergency information over voice modes, operators should spell out the words using a standard phonetic alphabet, such as the ITU phonetic alphabet (Alpha, Bravo, Charlie, etc.). This ensures absolute clarity, especially when signal conditions are noisy or weak. Mixing Morse code with voice transmissions is impractical and not standard operating procedure for clarification. Similarly, Q-codes are primarily designed as shorthand for CW (Morse code) and digital operations; using them to request readbacks on a voice channel is improper procedure and less effective than simply using phonetics.