Identifies the provider carrier system and channel to be used from a Wideband Analog, a High Capacity or an Optical Network facility when the customer has assignment control.
NOTE 1: The format and structure of this field is defined in the ANSI approved standard, ATIS-0300097, Structure for the Identification of Communications Connections for Information Exchange. The Alternate Connecting Facility Assignment consists of the following elements:
1. Facility Designation - A code that, for a specific type of facility uniquely identifies a path between two network nodes (1-5 alpha/numeric characters)
2. Facility Type - A code that describes a type of facility when it is other than a single baseband channel on cable. Valid entries are outlined in Telcordia Technologies practice BR 795-450-100 (1-6 alpha/numeric characters).
3. Channel/Pair/Time Slot - A code that identifies a specific assignable portion of a facility (1-5 alpha/numeric characters).
4. Location A - A standardized code that uniquely identifies the location of facility terminal A, which has the lower in alpha/numeric sequence of the two facility location codes. Valid entries are outlined in Telcordia Technologies practice BR 795-(100-186)-100 (8 or 11 alpha/numeric characters).
5. Location Z - A standardized code that uniquely identifies the location of facility terminal Z, which has the higher in alpha/numeric sequence of the two facility location codes. Valid entries are outlined in Telcordia Technologies practice BR 795-(100-186)-100 (8 or 11 alpha/numeric characters).
NOTE 2: Virgules are used as delimiters to separate all elements of the ACFA.
NOTE 3: All element entries of the ACFA are left justified with no trailing spaces.
NOTE 4: This field is not to be used to designate the facility that terminates at the ACTL and/or SECLOC. The CFA and SCFA fields will be used for these situations.
NOTE 5: May also identify a high capacity system which has been ordered by an end user or another customer.
USAGE: This field is optional.
DATA CHARACTERISTICS: 42 alpha/numeric characters
EXAMPLES: 1 0 1 / T 3 / 3 / B S T N M A G T / B S T N M A M T K 3 1
1 0 1 / T 1 / 1 - 2 4 / B S T N M A G T / B S T N M A M T K 3 1
NOTE 1: The second example indicates the proper format for ranging channel assignments.