A system and method of creating a digit string for use by a phone includes the steps of collecting speech data having numerical digits and/or alphabetical characters, parsing the speech data, converting each alphabetical character of the speech data into a numerical digit associated therewith, and assembling the speech data chronologically to form a digit string consisting of numerical digits and/or converted alphabetical characters. The converting step further includes comparing each alphabetical character of the speech data to a mapping table stored in memory and determining a numerical digit corresponding to each alphabetical character of the speech data from the mapping table.