Section 700 - Operation
576HD-50-700
DBS 576HD (USA) issued September 2001
A-7
Figure A-1. TRS Flowchart
Extension or trunk
accesses trunk
User dials digit
Wait for user to
dial additional digit
System outdials digit(s)
on trunk
System collects
additional digit
and outdials
System checks Restriction
TRS Level in Analyze Digit
Table
System checks Restriction
TRS Level in Leading Digit
Table
System checks originating
ext. or trunk TRS Class
System compares
dialed digit(s) to
Leading Digits
Table Prefix Dial
entries
System compares
additional digit(s) to
Analyze Digits Table
Prefix Dial entries
Is Origination TRS
Level greater than
Restriction TRS Level?
Is there a Prefix ID
entry in Leading
Digits Table?
System checks class
assignment for TRS level
for this trunk group
Origination
TRS Level
Are additional
digits required
for match?
Are additional
digits required
for match?
Has the Max. # of
Following Digits been
outdialed?
Yes
Yes
No exact
match
No Match
Match
Match
Yes
No
Allow call
Allow call
Restrict call
No
No
No
No
Yes
