Identifies the provider carrier system and channel to be used from a Wideband Analog, 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 Intermediate 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 ICFA(n).
NOTE 3: All element entries of the ICFA(n) are left justified with no trailing spaces.
NOTE 4: The ICFA(n)s must be in sequence with the configuration of the circuit.
NOTE 5: This field is not to be used to designate the facility that terminates at the ACTL/PRILOC and/or SECLOC. The CFA and SCFA fields will be used for these situations.
NOTE 6: May also identify a high capacity system that has been ordered by an end user or another customer.
USAGE: This field is conditional.
NOTE 1: Prohibited when the ICFA1 field is not populated, otherwise 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.