The aim of this procedure is that identical sounding words have the same code assigned to them.
For example, it is possible in a name list to find entries like "Meier" under different spellings such as "Maier", "Mayer", or "Mayr".
This is not explicitly mentioned in the original publication but can be inferred from the examples listed there, e.g. for "Breschnew" the code "17863" is specified.
For the umlauts Ä, Ö, Ü, as well as ß, that are not taken into account in the conversion table, it suggests itself to match them to the vowels (code "0") respective to the group S, Z (code "8").
Processing of a word is done in three steps: The name Müller-Lüdenscheidt will be coded as follows: Hans Joachim Postel: Die Kölner Phonetik.