Identifies the alternate telephone number associated with the alternate local contact.
USAGE: This field is conditional.
NOTE 1: Optional when the ALCON field is populated, otherwise prohibited.
DATA CHARACTERISTICS: 17 numeric characters (excluding 3 preprinted hyphens)
EXAMPLES: 2 0 1 - 9 8 1 - 3 5 8 7 - 3 2 5 7
2 0 1 - 9 8 1 - 3 5 8 7 - 3 2 5 7 8 6 9