STN - Screening Telephone Number

Identifies the telephone number assigned in some offices, (e.g., 1/1A ESS) to provide special call routing and/or billing arrangements.

USAGE: This field is conditional.

NOTE 1: Required for terminating service.

NOTE 2: Required for originating service when the CTX TEL field on the WAL Form is populated.

NOTE 3: Otherwise optional.

DATA CHARACTERISTICS: 10 numeric characters (excluding 2 preprinted hyphens)

EXAMPLE: 2 0 1 - 6 9 9 - 5 3 1 1