The phonetic transcription of "Beisner" is /ˈbaɪznər/. The word is spelled with the letter "B" followed by the diphthong "ei," which is pronounced as /aɪ/. The consonant sound "z" is represented by the letter "s" and is followed by the schwa vowel sound /ə/. Finally, the word ends with the letter "n" and the unstressed /ə/ sound. This spelling provides a clear and accurate representation of the word "Beisner" in written form.