ZETRON 748, Technical Manual

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Programming
80 025-9368H
HOW TO PROGRAM ANIs IN THE MODEL 748
ANIs (Automatic Number Identification strings) have been greatly expanded in their flexibility and
degree of programmability, as compared to ANIs in other, earlier products. The
Access ANI and
Disconnect ANI codes are independent from each other and are separately programmed for each
“User” (a User may be defined as an individual radio operator who gains access to the radio system
by transmitting appropriate DTMF codes, either manually or by using codes preprogrammed into
particular radios' ANI encoders). Each Access and Disconnect ANI code can be from 1 to 10 digits
in length, and may contain any of the 16 DTMF tone pairs, in any order or combination. Multiple
short (single digit) sign-on users can be supported, side-by-side with those using multi-digit ANI
sign-on. Wild ANI is supported in the Roamer version of the Model 748, and is indicated in the
database by the presence of the DTMF fourth column “A” character, which may be positioned at any
point within the ANI string. Exclusion programming is important when using Wild ANI, and is
supported in the Model 748. Because of the flexibility in ANI programming, the system programmer
must decide in advance how the system is to be used and must plan carefully
BEFORE programming
ANIs.
When replacing a controller on an existing system with a Model 748, careful attention must be paid
to ANI programming. Users of an existing system will have become accustomed to certain access
and disconnect routines, and care must be taken to make the transition to the Model 748
operationally transparent to those users. Reducing the need for retraining users and reprogramming
radios yields dividends in time, money, and users' satisfaction.
New installations also require careful planning of ANI programming. Choices made at the start of a
project can have long-term effects. Users' training, and their expectations regarding system
operation, will affect the choice of short sign-on, or multi-digit ANI access. In new installations,
there are usually two separate types of operation to consider. There are “in-house” installations,
typically manufacturing or maintenance operations, where one company has enough radio traffic to
require the sophistication of the Model 748. In these cases the user training can be fairly good, and at
the same time there will be less need for security or air time tracking and accounting. The other
common scenario is the commercial radio system (community repeaters, RCCs, etc.) where
individuals and companies with diverse backgrounds are the users. In this second scenario, the radio
system operator is mainly interested in the sales of radio air time, and the re-sale of telephone service
to radio users. In the first case, no air time tracking or SMDR (Station Manager Detail Record)
accounting is required, whereas these are of primary importance in the second case. In either case the
installer and programmer must plan for initial use and possible future expansion.
With some of these ideas in mind, we will first define some terminology and then show some
examples of how to program ANIs for various applications. Zetron Applications Engineers are also
available to help in determining how best to support your particular requirements and tradeoffs
involved. Applications support is available from Zetron's European office at +44 (0) 1256 880663
(voice), or +44 (0) 1256 880491 (FAX). Please ask for Model 748 Applications support.
Short Sign-on
Short sign-on is defined as any single digit ANI (“*” is the default ANI). It is used in conjunction
with sub-audible decode (as validation) to provide single digit access to a specific function or