Instruction manual

Equal Access Compliance Page 1433 of 3156
Features and Services
6 LD 11 – Assign a NCOS to a Digital Telephone.
7 LD 16 – Enable Equal Access for this route.
Carrier Identification Code Expansion supports and extends the General
Carrier Restriction method of blocking calls. Given the expansion in the
number of Carrier Identification Codes (CIC), it is no longer practical to
support Selective Carrier Restriction functionality. Carrier Identification
Code Expansion continues to provide the selective blocking function required
by the FCC; Nortel Networks and the FCC interpret the term “selective”
differently. For these reasons, prompts pertaining to General Carrier
Restriction and Selective Carrier Restriction in LD 16 no longer appear.
Customers who chose the ITOL prompt in LD 16 to block international calls
should also have international calls blocked at the Public Exchange/Central
Office to reduce the likelihood of unauthorized international calls. The carrier
or Central Office operator intercept interdigit timer typically expires in four
to six seconds. The Meridian 1 end of dial timers, End-of Dial Timer for non-
Digitone Trunks (EOD) and End-of Dial-Timer for Digitone Trunks (ODT),
are defaulted to 14 and four seconds respectively. ODT can be raised to seven
seconds to prevent Digitone stations from bypassing Equal Access
restrictions of Digital Distance Dialing international calls.
The interdigit timeout for non-leftwise-unique prefixes 0 and 01 is fixed for
a given carrier network. Therefore, Equal Access connects the call to the
Central Office trunk if the user dials Carrier Access Code + 0 and allows the
end-of-dialing timer to expire. Equal Access blocks the same call if the caller
presses the octothorpe (#) key and cancels the EOD or ODT. The caller
cannot bypass the EQAR prompt in LD 16 provided that the EOD and ODT
are set long enough to exceed the inter-digit timeout on the carrier networks.
Before and during the permissive period, when both the three-character and
the four-character CIC are allowed, current Equal Access users must set the
Original Carrier Access Code (OCAC) flag to YES in LD 17. OCAC should
be set to NO (default).
New Equal Access customers do not need to change the OCAC flag until the
feature is configured.