Mitel SX-200 Documentation page 507

SECTION MIT191 05/911 o-096-21 2-NA
EXTENSIONS
LOCAL TRUNKS ACCESS
Figure 5-2 O/l, Toll Restriction
Page 12
5.07 The first consideration to toll restrict an extension in a PABX
would be to limit the ability to access outgoing trunks. This is
done when an extension is assigned a Class of Service (COS)
grammed into it. This does not restrict an extension's ability to make
toll calls, but rather restricts the ability to access outgoing trunks. The
problem in most PABXs lies in a system's ability to restrict an exten-
sion after it has accessed a trunk (Figure 5-Z).
5.08 In the SX-lOO/SX-200 system there are provisions for denial on
dialing the digits 1 and 0; that is, if the first digit dialed is a 1 or
a 0, the toll-denied extension will be routed to the attendant or will
receive reorder tone (Figure 5-3).
5.09 In the examples shown in Figures 5-2 and 5-3, extension 549 is
the only extension which will be permitted to dial a long dis-
tance code or access a WATS line. Extensions 338 and 347 will be
restricted to local calls only, unless the attendant makes a long dis-
tance call and connects the extension to that trunk Obviously the
efficiency of such a system is dubious at the best of times. A toll
control based upon the digits or sequence of digits would be prefer-
able to the two outlined situations of paragraphs 5.07 and 5.08.
5.10 The following example should be used in conjunction with the
examples in the installation forms in the latter part of this
Section. This Section will outline a possible implementation of the
Multi-Digit Toil Control feature in an area where the toll prefix is 1. The
pertinent system configuration information for the example is:
There are three Trunk Groups: Trunk Group 1 and Trunk Group
2 are CO trunks; Trunk Group 3 consists of tie trunks to another
PABX.
5.11 It will be assumed, for Toll Control purposes, there are three
classes of users served by the PABX:
User A: Upper Management
User B: Sales and Marketing
l
User C: All other users.
333
I I I 347
YES YES Y E S
x1391
Figure 5-3 O/l, WATS, Toll Restriction