DETAIL ENGINEERING REQUIREMENTS Section 9, ATT-TP-76400
AT&T January, 2012
the approval standards of AT&T Common Systems on all Switch jobs in which 734D and/or
735A cable is to be installed. Furthermore, the Switch Supplier must continue to use only
those connectors approved by AT&T on such jobs.
5.6.2 The maximum hardwired cable length between the DSX-3 and connecting equipment is 427.5
feet for 734C coaxial cable. If 735C cable is used, the maximum cable length between the
DSX-3 and connecting equipment is 227.5 feet.
The standard cross-connect cord (735 type) used between two (2) DSX-3 panels will be
limited to 45 feet in length, while the longer-range cross-connect cord (734 type) used
between two (2) DSX-3 panels will be limited to 88 feet.
The following are length limitations for 735C coaxial cable (from Active Element to
Active
Element with and without DSX-3 panels.)
1.) From Network Element to DACS using direct cabling between the Network Element and
DACS – 500 feet (if intermediate DSX-3 panels are placed within this circuit, the length
limitation is reduced from 500 feet to 455 feet)
2.) From DACS to DACS using direct cabling between the two(2) DACS – 500 feet (if
intermediate DSX-3 panels are placed within this circuit, the length limitation is reduced from
500 feet to 455 feet)
5.6.3 To alleviate coaxial cable congestion in the relay rack duct, a minimum of 5 inches of space
shall be provided between each front cross-connect DSX-3 bay.
5.6.4 To alleviate coaxial cable congestion in the relay rack duct, a minimum of 5 inches of space
shall be provided between each rear-rear cross-connect DSX-3 bay.
5.6.5 Vertical rings shall be provided for each bay between the troughs.
5.6.6 Cross-aisle jumper troughs shall be mounted in the rear for rear cross-connect bays and at
the front for front cross-connect bays.
5.6.7 Only BNC connectors listed on the approved products list shall be used within AT&T. The
following statements apply ONLY to field-formed BNC connectors by contracted
installers. The factory-formed connectors can be any/all of the approved BNC
connectors: Kings, Trompeter or ADC. Kings, Trompeter or ADC may be used for factory-
formed BNC cable assemblies, which typically are shipped out as single-ended cable
assemblies, with the other end field-formed according to the statement immediately below:
1.) Kings BNC connectors shall be used in the West, Southwest and East regions and must
be crimped with Newhall Pacific/CCI’s tools.
2.) Trompeter BNC connectors shall be used in the Midwest and must be crimped with
Trompeter tools.
3.) ADC BNC is the preferred connector to be used in the Southeast and must be crimped
with ADC tools. Trompeter BNC may be used in the Southeast and must be crimped with
Trompeter tools.
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