Identifies the telephone number of the implementation contact for the T1 facility.
NOTE 1: To be used for completions, acceptance testing and other such related installation activity unless otherwise specified by customer/provider negotiations.
USAGE: This field is optional.
DATA CHARACTERISTICS: 17 numeric characters (including 3 preprinted hyphens)
EXAMPLE: 2 0 1 - 9 8 1 - 3 5 0 0 - 3 5 8 7