Panasonic KX-TDA50 Feature Manual page 304

1.17 T
A TRS check is applied each time a dialed number is sent to a CO line after an extension user goes off-hook
and seizes a line.
[Flowchart]
Level 7
Denied Code Tables
Denied Code Tables are preprogrammed lists containing the first few digits (leading number) of telephone
numbers which may not be called. All outgoing CO line calls made by TRS level 2 through 6 users are
compared to at least one Denied Code Table, and when the leading number of a dialed telephone number
(not including the CO Line Access number) matches an entry found in the applicable table, the call is denied.
There are five Denied Code Tables. Each table applies to a corresponding TRS level as well as the level(s)
preceding it, as explained below.
304 Feature Manual
An extension user tries to
make a CO line call.
Was the number dialed using
System Speed Dialing?
No
No
Checks the TRS level of
the extension's COS in
the current time mode.
What is the TRS level?
Levels 2, 3, 4, 5, 6
Is the dialed number found in an
applicable Denied Code Table?
Yes
Is the dialed number found in an
applicable Exception Code Table?
No
The call is denied.
The user hears a reorder tone.
Yes
Is TRS Override by
System Speed Dialing enabled?
Yes
Checks the TRS level of
the extension's COS for
System Speed Dialing.
Level 1
No
Yes
The call is permitted.