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304 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
4. Calls are screened by first considering the initial digits dialed. In this case, the first Prefix Dialed entry is a
1. This will look at any number that starts with 1. A * is available as a wild card. This represents any single
digit 1-9.
When prefix dial is being considered by the system, the system looks for the longest exact match first. The
system will consider a wildcard last. For instance, 911 is considered before *11 or even *. Notice also in
this example there are multiple entries that begin with 9.
If the leading digits are not enough to determine the handling of the call, then additional digits can be
considered by entering a Prefix ID that references entries in the Analyze Digits Table. Otherwise, the
Prefix ID is left blank and the additional items are considered.
In this example, we cross reference Prefix ID 1 in the Analyze Digits Table for any dialed number that
begins with 1. The remaining digits are analyzed in the Analyze Digits Table.
From Table 1, “Example - User Needs Worksheet,” on page 300 and Table 3, “Example - Origination TRS
Level Plan,” on page 302, the restriction levels are determined for each type of dialed call.
Route Type and Route Pattern Number are not used with TRS-only operation.
Table A-5. Example - Leading Digits Worksheet
Pattern
Number
(1-100)
Prefix Dial
(up to 10
digits)
Prefix ID
(Go to this
Prefix ID in
Analyze
Digits
Tables)
Number of
Following
Digits
Restriction
TRS Level
(Any
Origination
TRS at this
level or below
will be
restricted)
Route Type
Route Table (0)
Route List (1)
Time List (2)
Route Pattern
Number
Route Table (1-200)
Route List (1-100)
or Time List (1-50)
11
1
N/A N/A N/A N/A
2
101**** 1 N/A N/A N/A N/A
3
10*** 1 N/A N/A N/A N/A
4
101 1 N/A N/A N/A N/A
5
10 1 N/A N/A N/A N/A
6
0N/A8N/AN/A
7
01 2 N/A 8 N/A N/A
7
911 0 N/A 0 N/A N/A
8
*11 0 N/A 4 N/A N/A
95
976 0 N/A 4 N/A N/A
10
*0N/A1N/AN/A