ZETRON 748, Техническое руководство

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Programming
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privilege. The default for short sign-on is Mobile-to-Phone. Short sign-on requires a minimum of
500 msec digit duration to both qualify sub-audible decode and prevent falsing of single DTMF
digits.
Multi-Digit ANI
Multi-digit ANI is defined as any ANI that is more than one digit in length. All multi-digit ANIs are
checked for conflicts and considered unique. A typical usage is when a steering digit is needed for
access to multiple privileges with a single ANI. It is also provides a unique ID for the purpose of call
tracking and billing. A third use of multi-digit ANI is when trying to emulate leading steering digit
installations. Sub-audible decode for validation is optional when using multi-digit ANIs.
ANI Conflicts
ANI conflicts occur when one ANI code could be mistaken for another. Due to the flexibility of ANI
programming in the Model 748, an understanding of how conflicts can arise is important. Every
multi-digit ANI is checked against the existing database before being accepted into the database.
Short sign-on, by its very nature, is limited in how many unique digits are available and not checked
for conflicts.
An ANI conflict is where one multi-digit ANI is a sub-set (starting with the first digit) of another
multi-digit ANI. Conflicts between multi-digit ANIs that are checked for, follow this rule:
*1 = *12 = *123 = .. = *123456789
An ANI of *1 will match long before the 2 is ever sent!
Conflicts between Short sign-on and multi-digit ANIs are NOT checked for during programming.
There are two ways this can happen; a short sign-on (“*”) = the first digit of a multi-digit ANI
(“*123”), or using steering digits with short sign-on.
Conflicts to avoid:
• If “*” is used for short sign-on (the default ANI) any multi-digit ANI that starts with “*” could
be a conflict.
• If no sub-audible decode is used to validate a short sign-on user, a conflict may exists.
• Using steering digits with short sign-on presents a problem. All multi-digit ANIs with a valid
steering digit as the second digit could be a possible conflict.