2013 Nissan Altima Navigation System Owner's Manual - Page 237

Examples: 1-800-662-6200 "One eight zero zero six six two six two zero zero" Improving Recognition of Phone numbers: Recognition of phone numbers can be improved by saying the phone number in 3 groups of numbers. For example, to call 800-662-6200, say "Eight Zero Zero" first, and the system will then ask to speak the next three digits. Then, say "Six Six Two". After recognition, the system will then ask to speak the last 4 digits. Say, "Six Two Zero Zero". Using this method of phone digit entry can improve recognition performance. INFO: For best recognition, speak "zero" for the number "0" and "oh" for the letter "o". 9-6 Voice recognition