Use the Alternate Facility Restriction Levels (AFRL) capability to define a second set of facility restriction levels within a route pattern, or for lines or trunks. Attendants and system administrators can activate the AFRLs and change user access to lines and trunks. For example, you can use AFRL to disable the ability to place a long distance call when the office is closed.
AFRL alters the route patterns for originating telephones, originating trunks, and dialed authorization codes. If AFRL is active:
Traveling Class Mark (TCM) is set to a new FRL value
The TCM information that the system records in the Call Detail Recording (CDR) records is the value of the AFRL, not the original TCM.
Caution:
AFRL has an impact on both AAR and ARS call routing because AFRL can change routing preferences. The use of AFRL on tandem and tie-trunk applications can affect entire networks. The system can block calls that are part of a cross-country private network that need to be routed further.
