21.1 Capacity of System Resources
Operating Manual References
1.3.65 Time Service
2.1.6 Time Service Mode Control
17.1.6 TRS (Toll Restriction)Description
Toll Restriction (TRS) can prohibit extension users from making certain CO line calls, based on the Class of
Service (COS) assigned to them.
6.1 [4-1-1] Wired Extension—Extension Settings—Main— COS
6.10 [4-2-1] Portable Station—Extension Settings—Main— COS
[602] Class of Service
Each COS is assigned a TRS level for each time mode; level 1 grants the highest level of authorization, allowing
all CO line calls to be made, and level 7 grants the lowest level of authorization, prohibiting all CO line calls
from being made. TRS levels 2 through 6 are used to restrict calls by combining preprogrammed Denied and
Exception Code Tables, explained below.
Each COS can also have a separate TRS level applicable to calls made using System Speed Dialing.
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.
314 Feature Manual Document Version 2008-11
17.1.6 TRS (Toll Restriction)