Denied Code Tables Exception Code Tables
Level 2 011 Leading number to deny
international calls
011xx Leading number for
country to be allowed
Level 3 1123755 Leading number to deny
cellular phone calls
1123755xxx
x
Number for cellular
phones to be allowed
Level 4 011 Leading number to deny
international and long
distance calls
1315 Long distance numbers for
states/cities to be allowed,
and leading number of
cellular phones
1530
1 1123755
: : :
Conditions
CAUTION
The software contained in the TRS feature to allow user access to the network must be upgraded to
recognize newly established network area codes and exchange codes as they are placed into service.
Failure to upgrade the on-premise PBXs or peripheral equipment to recognize the new codes as they are
established will restrict the customer and the users of the PBX from gaining access to the network and to
these codes.
KEEP THE SOFTWARE UP TO DATE WITH THE LATEST DATA.
•TRS checks are performed for all calls made by:
–Any CO line access (Idle Line Access, Trunk Group Access, S-CO Line Access)
–Automatic Route Selection (ARS)
•The PBX can also be programmed to perform a TRS check for numbers that contain non-digits ( or #).
By default, the PBX ignores ("No Check") any non-digits that are dialed, which is useful in preventing
unauthorized calls which could possibly be made using certain telephone company exchanges.
9.5 [7-5] Miscellaneous—TRS Check for Dial "* #"
•TRS can also be programmed to check digits that are dialed after External Feature Access, such as when
trying to transfer a call to an outside party. (® 5.1.1 EFA (External Feature Access))
9.5 [7-5] Miscellaneous— TRS Check after EFA
•Host PBX Access Code/Special Carrier Access Code
TRS checks can be carried out on telephone numbers dialed using a Host PBX Access code (® 8.1.5 Host
PBX Access Code (Access Code to the Telephone Company from a Host PBX)) or Special Carrier Access
code (® 16.1.2 Special Carrier Access Code).
Access Code Type
Access Code is stored in the PBX Access Code is not
stored in the PBX
Access Code is dialed Access Code is not
dialed
Host PBX Access
Code
TRS ignores the code
and checks the
remaining digits.
Number dialed is not a
CO line call, so TRS
does not check the
number.
TRS checks the entire
number.
Special Carrier
Access Code
TRS ignores the code
and checks the
remaining digits.
TRS checks the entire
number.
TRS checks the entire
number.
•ARS
Document Version 2008-11 Feature Manual 319
17.1.6 TRS (Toll Restriction)