3121-04: Number of ANI Digits[Lines: Config: Setup: Caller ID Setup (3121): # of ANI Digits]
For ANI/DNIS format option 1 (see 3121-02: ANI/DNIS Format [Lines: Config: Setup: Caller ID Setup (3121): ANI/DNIS Format] above), use this option to specify the
number of digits in the ANI number. This is required for option 1 since delimiters do not mark the beginning
and end of the data string. The system must know how many digits of incoming ANI Caller ID data to
interpret.