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Appendix B - Toll Control Detailed Description

The following section describes the details of operation, programming and implementation of Toll Control
on the Hybrex G1-824.

Toll Control Overview

Toll control provides the ability for installation personnel and the end user to selectively restrict the dialing
capabilities of telephones within the system. There are 9 levels of restriction and one unlimited dialing
level within the system. Each of the 9 levels of restriction is under user control and can be programmed
to allow or disallow calls through a series of deny and exception tables that can be configured to up to 11
significant digits.

Centrex Considerations

If your system is not configured behind Centrex or behind a PABX, you may skip this section.

If the system is to be used behind Centrex or PABX operation, the system should be set up to recognize
that calls within the Centrex/PABX system are not subject to toll control and that calls outside the system
are subject to toll control.

There are two places within system programming that notify toll control that CO lines are behind Centrex.
The first location is on

Mode 35-TK-01

, where CO is the CO line number. If this item is set to a value of

[0], the system assumes that it is a normal CO line and that all dialing on it will be subject to toll control.

If 35-TK-01 is set to a value of [1], the system assumes that the line is configured behind Centrex and will
look for the Centrex Outgoing Code as programmed on

Mode 05-03-04, Centrex Outgoing Code

. If the

first digit dialed on the CO line matches the one programmed on 05-03-04, toll control checking will occur.
However, the digit programmed in Mode 05-03-04 will be discarded before toll checking occurs.

For example, if the digit [9] is programmed in Mode 05-03-04, any call that begins with the digit [9]
will be subject to normal toll control.  The first digit subject to toll checking will be the next digit
after the [9] is dialed.  Should the first digit dialed be something other than [9], the system
assumes that the call is an inside Centrex call and does not apply toll checking.

Mode 05-03-04, Centrex Outgoing Code

as listed above determines the code that will cause the system

to recognize a call as an outside Centrex call. This parameter is only checked when Mode 35-TK-01 is
set to a value of 1.

Note:

In some installations where the G1-824i is installed behind a PABX, there may be multiple access

codes the provide access to various types of CO lines. These installations are not as common as
they once were, but there as still some installations where a user may have to dial an access
code for a local call, a different access code for long distance calls and sometimes even a third or
fourth code to access tie lines to another facility. In those applications, we recommend that the
installation be configured so that all lines are configured as CO (Mode 35-TK-01 set to [0]) and
that toll control consider all digits that are dialed on the line.

Toll Plans

Mode 41-STN-05, Toll Plan (Day Service) or 41-STN-06, Toll Plan (Night Service)

, where

Station

the extension number of the station, is the first pointer that is checked when dialing begins on a CO line.
The digit refers toll control to check the matching toll plan on

Mode 18, Toll Plan Assignment

Example:

If a station is programmed as [0] on Mode 41-STN-05 or 28-STN-06, the station will be subject

to Toll Plan 00 on Mode 18. If a station is programmed as [2], it will be subject to Toll Plan 02 on
Mode 18.

Mode 18, Toll Plan Assignment

provides a toll plan routing map for each of the ten plans within the

system. It sets up the reference checking for each individual trunk within the system. In essence, it is the
switchboard that connects a station and a trunk to a pair of deny and exception tables. As can be seen
by consulting Mode 18 in the System Programming Modes, there is an entry in each of the 10 plans for