[Flowchart]An extension user tries tomake a CO line call.Was the number dialed usingSystem Speed Dialing?What is the TRS level?Is the dialed number found in anapplicable Denied Code Table?Is the dialed number found in anapplicable Exception Code Table?The call is denied.The user hears a reorder tone.Is TRS Override bySystem Speed Dialing enabled?The call is permitted.YesLevel 7 Level 1Levels 2, 3, 4, 5, 6YesYesYesNoNoNoNoChecks the TRS level ofthe extension's COS forSystem Speed Dialing.Checks the TRS level ofthe extension's COS inthe current time mode.Denied Code TablesDenied Code Tables are preprogrammed lists containing the first few digits (leading number) of telephonenumbers which may not be called. All outgoing CO line calls made by TRS level 2 through 6 users are comparedto at least one Denied Code Table, and when the leading number of a dialed telephone number (not includingthe 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.314 Feature Manual Document Version 2009-1217.1.6 TRS (Toll Restriction)