DIR - Directionality

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

VALID ENTRIES:

1O = One-way Originating

1T = One-way Terminating

2O = Two-way Originating

2T = Two-way Terminating

2W = Two-way

NOTE 1: Use of “2O” and “2T” is based on provider tariffs/contracts/practices.

USAGE: This field is conditional.

NOTE 1: Required when the TG ACT field is “N”.

NOTE 2: Prohibited when the TG ACT field is “E” or “Z”.

NOTE 3: Otherwise optional.

DATA CHARACTERISTICS: 2 alpha/numeric characters

EXAMPLE: 1 O