UFC 3-580-10
14 July 2004
Including changes 12 April 2005
4-3.1
Existing Infrastructure. Existing pathways and cabling will be
leveraged as the first option for the NMCI outside plant (OSP). The BAN / LAN
implementation will control this process. Existing IT cable and pathways become
the property of the NMCI Contractor at AOR. The NMCI Contractor may conduct
an assessment of existing non-IT OSP pathways and cables and provide a
written request to the customer for transfer of desirable infrastructure as early as
possible in the program. The station can transfer or share non-IT infrastructure
to the NMCI Contractor via a DD Form 1149 (for an example of a completed DD
Form 1149, see SOUTHWESTDIV web site in paragraph 1-2) if the infrastructure
is available after anticipated Government requirements have been accounted for.
When NMCI does not AOR all strands in an existing fiber optic cable, procedures
have been established relating to government and contractor responsibilities.
These procedures are available in Decision Papers on the SOUTHWESTDIV
Website.
4-3.2
Fiber Routing. NMCI practice is that all fiber will be underground.
Aerial fiber is only permitted if it already exists and diverse redundant fiber is
buried, or available via a different aerial path. Permission for NMCI Contractor to
run aerial fiber must be obtained from the cognizant activities Base
Communications Office and PWC / Region. If new trenching of pathways is
required, a minimum of one 103 mm (4 in) PVC conduit will be placed by the
NMCI Contractor. It is preferable to place at least two conduits when trenching,
however the NMCI Contractor should coordinate with the Government authority
having jurisdiction (usually the Navy BCO or USMC G6) to see if additional spare
capacity is desired. In multi-story building locations, two 103 mm (4 in) conduits
will be placed. Three innerducts (two 41 mm (1.5 in) and one 27 mm (1 in)) will
be used in each conduit and a pull wire is to be placed inside each innerduct and
conduit.
The NMCI architecture dictates that each access switch has two
links to the distribution layer. Diverse routing will be used by the NMCI
Contractor whenever practical as defined by the operating guidelines of the
NMCI Contractor. In order to comply with the NMCI performance requirements,
buildings with several hundred users that would be affected in an outage, may
dictate diverse fiber runs. However, it may not make good business sense to
add diverse fiber paths to access all buildings. Dual-fiber runs may also be
placed in the same conduit to provide some level of redundancy in the switch.
4-4
INSIDE CABLE PLANT
4-4.1
Existing Building. Existing horizontal pathways and work area
cabling will be leveraged by the NMCI Contractor as the first option for all NMCI
inside plant (ISP). If the existing cable plant is sufficient to support the needed
uplinks or interconnects, and will scale for future needs, it will be certified by EDS
and reused. If the cable plant is determined to be insufficient, new cable must be
pulled. Normally, existing Category 5e cable will be AOR'd if it has been certified
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