According to the Preface (see page v):
> This compilation, however, has been made under the personal supervision of telegraphic experts of long experience, and it is claimed for it that the cypher words are from their telegraphic construction the least liable to erroneous transmission by the operators.
Of course, I can't vouch for its success, but the issue was at least considered.
The redundancy in our languages is an important characteristics which reduces the chance of false understanding.