Identifies the network channel code for the circuit(s) involved. The NC code describes the channel provided by the provider from the customer's Access Customer Terminal Location (ACTL)/Primary Location to the provider central office switch.
NOTE 1: The format and structure of this field is defined in the ANSI approved standard, ATIS-0300223, Structure for the Identification of Network Channel (NC) and Network Channel Interface (NCI) Codes for Information Exchange or by COMMON LANGUAGE in BR-795-403-100. A brief summary of the format can be found in ATIS-0404000, Section 2.14.6.
VALID ENTRIES:
NC Code
NOTE 1: Valid NC codes are maintained by Telcordia Technologies.
USAGE: This field is conditional.
NOTE 1: Required when the Activity (ACT) field on the ASR Form is āNā or āCā, otherwise optional.
DATA CHARACTERISTICS: 4 alpha/numeric characters
EXAMPLE: S H - D