Instruction manual

Equal Access Compliance Page 1431 of 3156
Features and Services
Legend:
CAC = Carrier Access Code (101XXXX)
NPA = Numbering Plan Area (area code in the North American
Numbering Plan)
NXX = end-office code
(N = any digit except 0 or 1; X = any digit (0–9))
XXXX = any four digits
CC = Country Code
NN = National Number
Route types
Equal Access Compliance supports COT, FEX, WAT, DID, and TIE routes.
A TIE route is supported only if standard signaling is specified in LD 16
(SIGO = STD). To enable Equal Access call restrictions to function properly,
Digital Trunk Interface (DTI) TIE routes must be voice only. (DTI TIE routes
configured as voice/data are not supported for connection to a Public
Exchange/Central Office.) TIE routes must be either outgoing or incoming/
outgoing (ICOG = IAO or OGT).
Call restriction
Call restriction relies on fixed pattern recognition to determine which calls
can be denied. Switch administrators can restrict two kinds of direct-dialed
Equal Access calls: North American calls with the 101XXXX+1+NPA+
NXX+XXXX format and international calls with the 101XXXX+011+CC
+NN format. If either restriction option is chosen, the administration must
verify that the Original Carrier Access Code (OCAC) flag is correctly set.
Call restrictions do not affect attendant calls.
Calls blocked by Equal Access are not directed to alternate routes.