Allows one or more Local Routing Numbers to be routed on a single trunk group at end offices or local tandems rather than routing the traffic to an access tandem.
VALID ENTRIES:
Positions 1-3 = NPA
Positions 4-6 = NXX
USAGE: This field is optional.
DATA CHARACTERISTICS: 6 numeric characters
EXAMPLE: 2 1 4 5 2 3