Hush-A-Phone
... that AT&T once warned customers that using a privacy device called the Hush-A-Phone could result in termination of their telephone service?
... that <a href="./AT&amp;T" id="mwBZ0" rel="mw:WikiLink" title="AT&amp;T">AT&amp;T</a> once warned customers that using a privacy device called the <b id="mwBZ4"><a href="./Hush-A-Phone" id="mwBZ8" rel="mw:WikiLink" title="Hush-A-Phone">Hush-A-Phone</a></b> could result in termination of their telephone service?