Identifies the network channel code for the T1 transport involved. The network channel code describes the channel provided by the provider from the customer's ACTL to a provider central office.
NOTE 1: The format and structure of this field is defined in the ANSI approved standard, ATIS-0300223, Structure and Representation 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 ASOG Practice 000, 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 new T1 facilities are being ordered, the first position of the LTP field on the ASR Form is "D" or "E" and the ACT field on the ASR Form is "N".
NOTE 2: Optional when the first position of the LTP field on the ASR Form is "D" or "E" and the ACT field on the ASR Form is "C".
NOTE 3: Otherwise prohibited.
DATA CHARACTERISTICS: 4 alpha characters
EXAMPLE: H C - D