TSC - Two Six Code (End Office)

Identifies a code assigned to a switched access trunk Denotes a communications path connecting two switching systems in a network, used in the establishment of an end-to-end connection. group.

NOTE 1: The code is unique to each established trunk group.

VALID ENTRIES:

A valid TSC

NEW

NOTE 1: The entry of "NEW" is used when a TSC has not been assigned.

USAGE: This field is conditional.

NOTE 1: Required when the EOD USE field is "B", the END OFFICE field is populated and the TSC (Tandem Level) field is not populated.

NOTE 2: Required when the EOD USE field is "B", the END OFFICE field is populated and the entry in this field is different from the entry in the TSC (Tandem Level) field.

NOTE 3: Prohibited when the END OFFICE field is not populated.

NOTE 4: Otherwise optional.

DATA CHARACTERISTICS: 8 alpha/numeric characters

EXAMPLE: A Q 2 3 4 5 6 7