Tài liệu Cabling Standard - (Private) - Harvard University - Wire and Cable Standards pptx

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 1 of 32






H
H
a
a
r
r
v
v
a
a
r
r
d
d


U
U
n
n
i

i
v
v
e
e
r
r
s
s
i
i
t
t
y
y


W
W
i
i
r
r
e
e


a
a
n

n
d
d


C
C
a
a
b
b
l
l
e
e


S
S
t
t
a
a
n
n
d
d
a
a
r

r
d
d
s
s








Disclaimer
This information is collected and composed by QUANG DUNG TECHNOLOGY from Havard.edu. All
information is copyrighted by Harvard University.



AUTHORIZED & EXCLUSIVE DISTRIBUTOR
Head Office
Suite 202, The Colonnade Building, 27 Nguyen Trung Truc St.,
District 1, Hochiminh City, Vietnam
Tel: 84.8 823-1693 Fax: 84.8 823-1665

Hanoi Office
A11, 3/Fl., Horizon Hotel, 40 Cat Linh St.,
Dong Da District, Hanoi, Vietnam
Tel: 84.4 736-7055 Fax: 84.4 733-2470
Website: www.qd-tek.com.vn

Email:
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 2 of 32
TABLE OF CONTENTS

SECTION I: INTRODUCTION
A. Need For Standards

SECTION II: ABOUT THE HARVARD UNIVERSITY NETWORK (HUN)
Intellipath Telecommunications System
Wire and Cable
High-speed Data Network (HSDN)
Telecommunications Facilities Management System (TFMS)

SECTION III: CUSTOMER WIRE AND CABLE CONSIDERATIONS
A. Requirements Of Current Applications
B. Physical Environment
C. Building Distribution
D. Space Requirements
E. Electrical Requirements: MDF and IDF
F. Grounding
G. HVAC requirements
H. Cable Access: Internal And External
I. Wire Removal
J. Asbestos Abatement
K. Fire Stopping

SECTION IV: UNIVERSITY INFORMATION SYSTEMS ROLE

A. Provide Design Assistance
B. Notify Verizon of Facilities
C. Develop Implementation Plan
D. Provide Project Management
E. Conduct A Performance Evaluation
F. Administer Data Base
G. Coordinate Moves, Adds, Changes
H. Coordinate Repair
I. Conclusion

SECTION V: CONTRACTOR RESPONSIBILITIES
A. Color Coding
B. Label And Numbering Plan
C. Maintain Records and Documents

SECTION VI: TECHNICAL STANDARDS
A. Jacks

B. Backboards
C. 110 Termination Block Placement
D. VERIZON Network Termination and 110 Point Of Presence (POP)
E. Station Wiring (Horizontal Distribution)
F. Concealment
G. Voice And Data Riser Systems

SECTION VII: INTER-BUILDING CABLE (HSDN)
Fiber Optic Cable Composition

Fiber Optic Cable
Fiber Optic Cable Termination

Fiber Optic Testing and Acceptance
Fiber Optic Functional Specifications
Installation Requirements
Labeling Requirement
Test Requirements
Documentation Requirements
Warrantee Requirements

SECTION VIII: GLOSSARY
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 3 of 32
SECTION I. INTRODUCTION
A. Need For Standards
The Harvard University Network (HUN) addresses the University's expanding need for
a wide variety of voice and data communication services. The University Network is
comprised of an Intellipath network, which provides voice services, integrated with
multiple data networks via wire and cable and a high-speed fiber backbone.
The goals of the University Network are to:
• help control costs
• protect current networking investments
• provide improved service to customers
• prepare the University for future network opportunities
• ensure installation integrity and adhere to building aesthetics
Because the University Network provides a wide variety of communications services,
it is important that the underlying wire and cable structure be sound. Specific wire
and cable standards have been developed by University Information Systems (UIS).
These standards were developed and adopted by the University as part of its long-
range plan to provide the Harvard community with consistent campus wiring. These

standards ensure that as a department's needs change, or construction and
renovation occurs, users will be able to access new technology efficiently and cost-
effectively.
Wire and cable standards are designed to assist departments as they plan for change
and expansion. Following these standards is especially important so departments and
the University can take advantage of the expanding array of new network
technologies. To prepare for these evolving technologies, the University has adopted
an "open architecture" approach. The open architecture approach provides a
framework upon which a wide variety of technologies can be built. Voice, data (both
low-speed and high-speed transmission), fax, graphic, wireless, VoIP, and image
transport can all be accommodated within the structure provided by the University
Network wire and cable standards. Some of the benefits of following wire and cable
standards are:
• By incorporating University Network standards in all wire and cable
installations, departments may be comfortable that newly installed equipment
will be compatible with the Harvard University Network.
• By using uniform planning criteria, departments can be sure that appropriate
Network design decisions are made during each design phase.
• By following the recommendations for all wire and cable installations,
departments know there will be a standard Network in place so they can take
advantage of all enhanced services and remain compatible with emerging
technologies.
• By implementing wire and cable administrative procedures, departments are
certain that UIS will be able to support the University Network's telephone and
data capabilities.
All wire and cable standards contained in this guide conform to industry
recommendations and take into account the wide variety of technology needs and
requirements of the Harvard community.
HARVARD UNIVERSITY Wire and Cable Standards

Quang Dung Technology Distribution Company Page 4 of 32
SECTION II. ABOUT THE HARVARD UNIVERSITY NETWORK
(HUN)
A. Overview The University Information Systems has implemented the major
components of the University Network:
• Intellipath Telecommunications System
• Wire and Cable
• High-speed Data Network (HSDN)
• Telecommunications Facilities Management System (TFMS)
Intellipath Telecommunications System
Intellipath is the name for digital Centrex service that provides telephone service to
the University. UIS has installed the 5ESS digital switching system using Integrated
Services Digital Network (ISDN) standards. ISDN, a series of international standards
that provides a universal interface for digital communications. (see Attachment A)
.
Wire and Cable
The wire and cable system is the distribution medium used to transmit voice and
data. The wire and cable system, installed both in and between University buildings,
provides the foundation for transmitting the signaling service from the central
telephone office to the user's telephone and data equipment.
High-speed Data Network (HSDN)
HSDN is the information transportation service linking data networks and devices over
a high-speed fiber optic "backbone" (capacity over 10 Gigabit). Users are able to
access the HSDN through both local area networks and the data communications
capabilities of Intellipath service. Users are also able to access external data networks
via the HSDN.
Telecommunications Facilities Management System (TFMS)
TFMS is an on-line data base that provides UIS with inventory, service order, repair,
billing, and management reporting information about the Network.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 5 of 32
SECTION III: CUSTOMER WIRE AND CABLE CONSIDERATIONS
Before making any wire and cable decisions, building and office managers should
evaluate the requirements of their building based on the criteria described in this
section. A consultant from UIS is available to work with building and office managers
to determine an application's wire and cable requirements and to design a system
that adapts to their physical environment. Harvard University Network consultants will
recommend all wire and cable designs based on the standards set by the major
telecommunications vendors and the Network standards adopted by Harvard. These
standards balance user needs, financial resources, and future technology
requirements.
A. Requirements Of Current Applications
An application's wire and cable requirements may include:
• software or hardware
• local area networks
• transmission speed
• security
• financial options
B. Physical Environment
The location's physical environment may include:
• number and location of users
• existing resources - space, conduits, cable trays, and station wiring
• new construction - location of new wiring closets
• anticipated future growth
• constraints - distance limitations
• building utilities
• security requirements

C. Building Distribution
Each University building houses a Telecommunication Room (MDF) in the basement
and Supporting Telecommunication Room (IDF's) on each floor. Telecommunication
Room design must be carefully planned (see Attachment B)
. Design considerations
include:
• adequate lighting, ventilation, air quality, and power
• ample work space for technicians
• room for all cabling, equipment, and backboards
• accessibility and security
• electrical requirements
• national, local, and building electrical codes
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 6 of 32

A riser cable system in each building links the floors together. For the building's high-
speed data requirements, fiber optic cable is used in addition to the customary copper
twisted pair for the riser cable. The locations of the Telecommunication Room are
essential for the wiring design to be both cost effective and to provide the highest
cable integrity. Ideally, the riser system is designed in a straight vertical line from the
basement MDF closet up through the IDF Telecommunication Rooms on each floor.
Each MDF/IDF should be located in the center of the area to be cabled to minimize the
length of the cable runs.
D. Space Requirements
When departments plan renovations or new construction, it is important to provide
sufficient power, space, and access to the building's utilities during the architectural
planning stages.
• The Main Telecommunication Rooms (TR) (MDF) will be a minimum of 10 feet

by 12 feet.
• Supporting Telecommunication Rooms (IDF) will be a minimum of 8 feet by 10
feet.
• Rooms must be kept clean and dust free at all times.
• Rooms will not be used for any purpose except communications support.
• The recommended height of the finished ceiling to the finished floor will be 8ft.
6in.
• Because Electromagnetic Interference (EMI) causes severe problems with
electronic equipment, communication rooms must not be shared with electrical
feeders, branch circuits or transformers.
• No housekeeping or other materials shall be stored in these rooms.
• Space for plywood (covered with fire-retardant paint) installed a minimum of
6” above finished floor (AFF) in both the MDF and IDF.
• Rooms should be stacked to provide for ease in running the riser, in a straight
vertical line from the basement MDF running to the IDFs.
• Locate the TRs in the center of the area to be cabled to minimize the length of
cable runs.
• Floors, walls, and ceiling shall be sealed, painted, or constructed of a material
to minimize dust. Finishes should be light in color to enhance room lighting.
Floors shall have anti-static properties as per IEC 61000-4-2.
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 7 of 32
• Carpet is prohibited
• Telecommunication rooms shall be located above any threat of flooding. Room
located in basements shall have drains with positive drainage, otherwise sump
pumps must be provided. When sump pumps are required, they shall be
connected to an emergency power supply and a water detection system shall
be provided to notify UIS SOC Operations in the event of a water problems.

• Services that are not communications related are prohibited in these rooms.
This includes, but is not limited to supply storage, janitorial services, etc.
• Doors of the TR shall be a minimum of 1 m (3 ft) wide and 2.13 m (7 ft) high,
without doorsill, hinged to open outward (code permitting) or slide side-to-
side, or be removable. Doors shall be fitted with a lock and have either no
center post or a removable center post to facilitate access for large equipment.
E. Electrical Requirements: MDF and IDF
Power for the MDF and IDF should adhere to the following requirements:
• Each TR shall be furnished with its own dedicated electrical panel. The panel
for each room shall be wired to a panel that is fed from a UPS system that is
connected to the Emergency generator for the building.
• A minimum of two, non-switchable, 30AMP, 208 (NEMA L6-30) Volt alternating
current nominal twist-lock receptacles, each on separate branch circuits, shall
be provided for equipment power. In addition, each space shall have a
minimum of 2 non-switchable 20 Amp (NEMA 5-20), 120 volt alternating
current quad receptacles.
• Proper lighting that produces 50 foot-candles positioned between rows of racks
and/or cabinets, not directly over the top of the rack.
• The grounding busbar is provided by others, but grounding of the conduit and
cable tray is the responsibility of the telecommunications contractor.
• Electrical panels, other than those exclusively serving the telecommunication
room which it is located, are strictly prohibited in telecommunication room.
• Each Work Area (WA) should have two (2) duplex outlets with every outlet.
F. Grounding

All telecommunications rooms shall have a Telecommunications Grounding Busbar
(TGB). A TGB should provide a central ground attachment point for
telecommunications systems, computers and other equipment located in the tele/data
room.
• Provide a suitable telecommunications ground for equipment as required per

ANSI/TIA/EIA-607 (telecommunications grounding), IEEE Emerald Green book
and NEC requirements.
The Telecommunication Main Grounding Busbar (TMGB) installed in the MDF
shall be 20 inches long and 4 inches wide by ¼ inch thick with pre drilled
NEMA bolthole sizing and spacing, Chatsworth Products, Inc. part number
40153-020.
The Telecommunication Grounding Busbar (TGB) installed in the IDF shall be
10 inches long and 2 inches wide by ¼ inch thick with pre drilled NEMA
bolthole sizing and spacing, Chatsworth Products, Inc. part number 13622-
010.
• All cable tray, ladder rack, access floors and Telecommunications racks and/or
cabinets contained within the MDF and the telecommunications room shall be
grounded/ bonded together with #6 AWG, and then bonded/grounded with #6
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 8 of 32
AWG to the Telecommunications Grounding Busbar (TGB). The grounding
busbar shall be provided by the Electrical Installer.
• All aforementioned telecommunications devices shall be grounded/bonded to
the TGB using solid 6 bare copper (AWG wire). Coordinate exact grounding
locations for each component with the Electrical Installer.

Stand-Off Insulator Specifications:
Dielectric Strength:
19,000-21,000 volts S.T.
UL 94V-O Flame Resistant
Finish Color:
Red
Insert Size & Material:

3/8-16 x 5/8”D UNC-2B Aluminum
Dimensions:
2.5”W x 2.5”D
Grounding Busbar (TGB) Specifications:
Provides 3.75” stand-off from backboard.
The 20” busbar (13622-020) has both .25”D and .375”D
All telecommunications rooms shall have a
grounding bar that shall be 20 inches long and 4
inches wide by ¼ inch thick with pre drilled NEMA
bolthole sizing and spacing. Each distribution point
shall be grounded to the main building ground,
NEC and EIA/TIA 607 requirement shall be
followed.
Telecommunications Grounding Busbars

Each distribution point shall be grounded to the main building ground, NEC and
EIA/TIA 607 requirement shall be followed.
• First choice for a ground at the MDF is a busbar connected to the building
ground; second choice is a bus bar connected to a water pipe (with a #6
copper cable).
• First choice for a ground at the IDF is a busbar connected to the building
ground; second choice is a bus bar connected to a water pipe (with a #6
copper cable).
• The grounding busbar is provided by other, grounding of the conduit and cable
tray is the responsibility of its installation contractor.
G. HVAC requirements
• Coordinate electronic equipment BTU output with UIS for proper cooling
requirements to maintain 64F – 75F temperature and 30% min – 55% max
relative humidity. Typically the buildings central air conditioning system is
suitable.

• Maintain positive pressure with a minimum of 1 air change per hour.
• No plumbing, HVAC or electrical conduit shall pass through or be directly above
the telecommunications room.
H. Cable Access: Internal And External
Internal Cable Access
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 9 of 32
• TR’s aligned vertically: coring (drilling) of the floor and placement of sleeves is
generally used.
• TR’s not aligned vertically: raceway systems composed of trays and/or
conduits should be installed.
Departments planning to install their own raceway system should be aware that the
standards require all wire be concealed. Fishing the walls, wire mold, and conduit
placement are three methods of concealing wires. The University standard for station
wire is to fish the walls or use wire mold.
However, as part of a long-range structural plan, if conduit to a station jack location is
desired we recommend:
• 1" conduit stubbed and capped for protection in the ceiling with a pull string
• 2" x 4" electrical work box recessed into the wall (junction box is required for
every work area location).
• Mounting height:
o Standard outlet center: 18" AFF (above finished floor)
o Wall outlet center: 54" AFF
o Handicapped wall outlet: 48" AFF
If the conduit transports more than telecommunications, departments may want to
reassess the conduit's size to provide for additional voice or data communications
demands. In any situation where a conduit is being installed, the fill ratio must be
40%.

When installing conduits, if there are more than two 90-degree angle turns in the
conduit, a pullbox is required. When installing a tray as part of an open raceway
system, the tray must be more than one (1) foot from an electrical source (i.e.
fluorescent light).
To facilitate future cable installations a new pull string, tied off at both ends shall be
installed in conduit simultaneously with the pull-in of cable.
External Cable Access
Four (4) four (4) inch conduits with mule-tape with footage markers shall be installed
and tied off in each must be provided by the customer from the building MDF to the
property line or nearest utility manhole.
I. Wire Removal
Cables that are abandoned in ceilings, riser systems, and air handling systems have
always been a source for fueling smoke and fire. The weight of the cabling has also
strained ceiling, raceway, and riser systems. Often times, abandoned cables have
been left behind when new cabling is installed. NEC 2002 Article 770.3(B) for optical
fiber and Article 800.52(B) for communications cabling states that all accessible
abandoned cable, unless marked for future use, must be removed.
The building owner is financially responsible for removing old abandoned cabling. UIS
is available to help coordinate this effort.
J. Asbestos Abatement
The building owner is responsible for asbestos abatement. UIS is available to help
coordinate this effort.
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 10 of 32
K. Fire Stopping
• Provide fireproof seals in accordance with the National Fire Protection
Association (NFPA) and the National Electric Code (NEC), Article 200-221 and
EIA/TIA 569 standards.

• Fire stop all penetrations in accordance with the current edition of the National
Electrical Code.
• Do not use concrete for fire stopping on cable trays, wireways or conduit.
Contractors who use this method will be required to replace all cables affected.
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 11 of 32
SECTION IV. UNIVERSITY INFORMATION SYSTEMS ROLE
University Information Systems (UIS) can provide departments with the following
assistance to ensure all wire and cable is installed in a thorough and professional
manner. UIS will work with departments during the entire installation process to make
sure all work meets the department's needs.

A. Provide Design Assistance
An UIS Project Manager will work with your customer representative to:
• conduct a needs assessment
• assist in preparing a floor plan detailing specific station locations to be wired
and the location of wiring closets

• develop a comprehensive design recommendation using University standards
• present design, time-line, and work descriptions
• present a thorough financial analysis of the intended work
• identify special construction requirements that are the department's
responsibility

• identify special events that would affect the time-line
• obtain approval of the plan from the department
B. Notify Verizon of Facilities
UIS will coordinate efforts with Verizon to provide outside plant cable to each building

to accommodate the number of stations in the building and allow for a 20% growth in
the number of stations.

C. Develop Implementation Plan
A UIS Project Manager will work with the customer representative to develop an
orderly implementation plan. This includes assigning responsibilities for site
preparation and preparatory work as well as the actual installation of required
components. The UIS Project Manager will bring together the team members and
ensure that they understand the assignment. The implementation plan will describe
the scope of work and include target dates.

D. Provide Project Management
The UIS Project Manager will:
• initiate the work order and begin work (all changes must be requested through
the UIS Project Manager)

• oversee site preparation, including the equipment room and power
requirements

• conduct status meetings to ensure implementation is progressing as planned
• oversee the completion of wire and cable work, including testing, according to
the agreed-upon specifications

E. Conduct A Performance Evaluation
The UIS Project Manager will:
• conduct a walk-through to inspect the work with customer and vendor
representatives

• send a letter to the customer itemizing work performed, dates, and billing
information

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 12 of 32
• negotiate a plan to resolve any discrepancies with the customer and contractor
• sign an acceptance agreement for the work
F. Administer Data Base
The UIS Project Manager will arrange to bill the customer when work is accepted, and
to update the University Network data base to reflect the changes.

G. Coordinate Moves, Adds, Changes
UIS will retain responsibility for installing new Intellipath lines. The University
Network's management features allow UIS to perform many move, add, and change
activities for departments. For example, UIS is able to:

• change ports in an electronic key system
• move telephones/lines to a new room
• terminate fiber optic cable (multi-mode and single mode).
This ability reduces the cost to departments of rearranging telephones.
H. Coordinate Repair
As of July, 1997 departments are required to purchase their station wirings. UIS's
Telephone Repair (5-4900) maintains all wire. If a problem occurs, trained UIS
personnel determine the source (outside plant or inside wiring) and effect repair.
UIS's Telephone Repair will follow up to make sure the department is satisfied with all
repairs. Departments will be charged for telephone repairs on non-standard wiring.

I. Conclusion
The mission of the University Information Systems is to provide high-quality and
economical voice and data services to the University. The wire and cable standards

described in this guide have helped to make the Network a reality for the University
community. Because the Network's architecture complies with international standards,
investments in communications technology made by departments are protected and
have put Harvard in an ideal position to take advantage of future communications
opportunities. UIS encourages your input as the Network evolves and welcomes any
suggestions about how to continue and enhance this effort.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 13 of 32
Section V: Contractor Responsibilities
Contractors who work with the UIS project manager and the customer representatives
are chosen for their integrity, economy of cost, and willingness to perform work in
accordance with University wire and cable standards. They are required to follow the
University's Technical Standards (see Section VI) for wire and cable installation. These
standards allow installations to be thoroughly tested for accuracy and to provide UIS
with the ability to administer the Network effectively.

Contractors are required to provide an accurate and consistent account of work
completed. The University requires three administrative steps:

• Color Coding
• Label and Numbering Plan
• Maintain Records and Documents

A. Color Coding

Originating and terminating points of a group of wire pairs will be connected to color-
coded hardware. The Harvard University Network uses the following color codes:

ORANGE: Demarcation Point (i.e., central office terminations)
GREEN: leads from central office (Network Interface)
PURPLE: leads from common equipment ports (KSU)
YELLOW: leads from auxiliary equipment (e.g. NT1's and low voltage)
WHITE: 1st level Backbone
GRAY: 2nd level Backbone
BLUE: leads from station outlet.
RED: Key Telephone Systems
Communications and data conduit are to be clearly identified, at every junction box,
via a painted section or by use of conduit stickers indicating each conduit run. Green
shall be used for computer, data and telephone and Orange shall be used for fiber
optic.

B. Label And Numbering Plan

Labeling at the Station

Each station outlet is marked with a unique identifying number. The top edge of the
jack should be clearly marked with a number (up to 7 digits) and a letter. Marking
refers to:

• floor where the station outlet is located
• three-digit number identifying the station outlet
• intermediate distribution frame (IDF) to which the station outlet is cabled.
See Attachment C
.
Example
HARVARD UNIVERSITY Wire and Cable Standards

Quang Dung Technology Distribution Company Page 14 of 32
Station outlet on the 4th floor of Widener Library, outlet number 023, cabled to wiring
closet B would be labeled:

4023-B
Where 4 is the floor, 023 the outlet number, and B the IDF or MDF closet.
Example
If the closet is not on the same floor as the jack, a number identifying the IDF floor
will follow the IDF code. For example, 4023-3 indicates the closet is on the third floor.

4023-3
Where 4 is the floor, 023 the outlet number, and 3 the floor IDF closet.
Floors or buildings with only a single MDF or IDF will continue with this marking plan
for consistency and future expansion.

Labeling in the IDF wiring closet will be on a blue labeling slip and be marked 4023-B
on both the VOICE and DATA termination blocks. The jack will be labeled with the
same number under the voice outlet, See Attachment C
.
Labeling at the Riser

Since the contractor must crosswire the riser at the IDF, labeling at the IDF and the
MDF must be the same as the station block.

C. Maintain Records and Documents

Each IDF and MDF will contain a copy of "as-built" drawings provided by the
contractor. The jack locations, number, and test results will be recorded by the
contractor. The contractor will update all changes to drawings until the project is

accepted. A copy of the "as-built" drawings will then remain in the IDF and MDF to
allow on-going record maintenance. The original will be provided to UIS.

Harvard will not accept the submission of any CAD drawing deliverable which contains
references to external source drawing files. All externally referenced data sources that
were used during the CAD drawing production phase should be inserted and retained
as a block within a single drawing file, including the title block, upon project
completion and prior to drawing delivery to Harvard. The resulting self-contained
drawing file is an acceptable deliverable to Harvard.

Hand written test results will not be accepted.
The Jack Test and Acceptance document will list the building, MDF or IDF, jack
number, and the location of the jack. The Test document will list cable length and the
results of the DB readings test. All horizontal Voice and Data Category 5e channel
testing shall be performed with a Level III accuracy cable tester updated with the
most recent firm ware. All horizontal Voice and Data Category 6 channel testing shall
be performed with a Level III accuracy cable tester updated with the most recent firm
ware.

All Fiber Optic Cables will be tested using a Optical Time Domain Reflectometer
(OTDR), test and record, the quality of each cable while still on the reel, prior to
installation, to verify that no damage had occurred during shipment. This test needs
to be done in one direction only.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 15 of 32
All Fiber Optic Cables will be tested using a Optical power meter, measuring end-to-
end attenuation for all installed cables, including: all splices, terminated fiber; all

connector, and patch panels. The total loss shall be measured and reported for each
cable at the appropriate operation wavelengths, 850 nm, 1300 nm, 1310 nm and
1550 nm. Optical attenuation measurements are to be done from both directions,
end-to-end.

All Fiber Optic Cables will be tested using the OTDR, making certain to test and record
the optical quality of each cable after installation. Testing one direction only. Provide
all printed readings, both before and after installation, so they can be included in the
as-built documentation. (Applicable to OSP cable, only)

SECTION VI. TECHNICAL STANDARDS
The following technical standards are required for all wire and cable installations. Only
when all the items described below are properly provided will UIS approve the
installation.

A. Jacks
The Jack Test and Acceptance document will list the building, MDF or IDF, jack
number, and the location of the jack and the Test document will list cable length and
the results of the DB readings test. All horizontal Voice and Data Category 5e channel
testing shall be performed with a Level III accuracy cable tester updated with the
most recent firm ware. All horizontal Voice and Data Category 6 channel testing shall
be performed with a Level III accuracy cable tester updated with the most recent firm
ware.


Hand written test results will not be accepted.

Station Jack is a Triplex outlet (1 for voice, 2 for data) with a modular connection. It
is mounted vertically ‚ voice over data. Harvard has the following standards:

· Voice Modular Inserts
1.
For new construction, use single modular insert for communication ports, 8
position, 8 conductor, non-keyed, Category 6 (Gigaspeed), shall be Avaya P/N
MGS400BH-246.

2.
For renovations, use single modular inserts for communicator ports, 8 position,
8 conductor, non keyed, Cat 5e, shall be Avaya P/N MPS100E-246, Commcode
108 232 695.
· Data Modular Inserts

3.
For new construction, use single modular insert for communication ports, 8
position, 8 conductor, non-keyed, Category 6 (Gigaspeed), shall be Avaya P/N
MGS400BH-XXX.

4.
For renovations, use single modular inserts for communicator ports, 8 position,
8 conductor, non keyed, Cat 5e, shall be Avaya P/N MPS100E-246, Commcode
108 232 695.

5.
The Module Information Outlets will be white in color for voice, gray in color for
the first data outlet and black in color for the second data outlet.
Flush Mounted Faceplates:

6.
Single gang 1-port face plate shall be Avaya P/N M10L-246, Commcode 108
258 419.

7.
Single gang 4-Port faceplates shall be Avaya P/N M14L-246, Commcode 108
168 550.

8.
Single gang 2-port 106 style faceplates shall be Siemon P/N DP-S-20.
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 16 of 32
9. Single gang 2-port 106 style faceplate shall be Ortronics P/N OR-40300256-09.
10.
Single gang 3-port faceplate shall be Avaya P/N M13L-246, Commcode
108 168 519.

11.
Single gang 6-port faceplate shall be Avaya P/N M16L-246, Commcode
108 168 592.

12.
2 port 106 style mounting frame shall be Avaya P/N M106FR2-246,
Commcode 106 622 210.

13.
4 port 106 style mounting frame shall be Avaya P/N M106FR4-246,
Commcode 106 622 277.

14.
Raceway – Note: Coordinate all pathways and raceways with U2ATT

Electrical Engineer.

15.
End plates (1 pair per baseplate) for labeling shall be Wiremold P/N AC-
EPL.

16.
One port insert shall be Wiremold P/N 2A-U1ATT.
17.
Two port insert shall be Wiremold P/N 2A–U2ATT
18.
Blank insert shall be Wiremold P/N 2A-BL.Optional M20AP Dust
Covers/Blanks may be used to cover any unused outlets or outlet openings.

· Surface Mounted Outlets

19.
M104SMB-246 with a M20AP Dust cover
20.
Approved Harvard equivalent
21.
Label And Numbering Plan See attachment C
22.
Jack wiring pair assignments follow the EIA/TIA T568B configuration.
See Attachment E for pin configuration. Jack outlet placement is:

23.
Standard outlet: center of station outlet will be 18" AFF (above finished
floor)

24.
Wall phone outlet: center of station outlet will be 54" AFF (see
Attachment C)

25.
Handicapped wall phone outlet: center of station outlet will be 48" AFF.
26.
Desk-type and wall-mounted telephone outlet boxes are standard 4" by
4"electrical boxes.

27.
Customized jacks may be requested in special circumstances.

· Data Patch Panels/Blocks

· For Category 6 Solution.

28.
24 port, high density empty port patch panel(s) shall be Avaya
Fleximax P/N 108356312.

29.
Single modular inserts for data shall be 8 position, 8 conductor,
Category 6, Avaya P/N MGS400BH-xxx. The color of the jack shall be gray in
color for the first data outlet and black in color for the second data outlet.

30.
24 port, high density patch panel shall be Avaya GigaSpeed XL
Patchmax P/N PM2160GS-24, Commcode 108 619 347.

31.
48 port, high density patch panel shall be Avaya GigaSpeed XL
Patchmax P/N PM2160GS-48, Commcode 108 619 362.

· For Category 5e Solution.

32.
300 pair termination block, 110 type, shall be Avaya P/N 110AW2-300,
Commcode 107 059 917.

33.
100 pair termination block, 110 type, shall be Avaya P/N 110AW2-100,
Commcode 107 059 891.

34.
C-4 clips shall be Avaya P/N 110C-4, Commcode 103 801 247.
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 17 of 32
35. Designation strips shall be Avaya P/N 110BB2-4500L, Commcode 106
657 174.

36.
Designation strip, transparent label holder shall be Avaya P/N 188UT-1-
50, Commcode 103 895 504.

37.
24 port, high density patch panel shall be Avaya Patchmax P/N
PM2160GS-24, Commcode 108 619 347.

38.
48 port, high density patch panel shall be Avaya Patchmax P/N
PM2160GS-48, Commcode 108 619 362.

· Note: Coordinate exact patch panel with UIS Representative.
B. Backboards
1.
All backboards used by any contractor will be void free, fire-treated 3/4"
plywood panels painted with a fire-resistant paint before wiring blocks or other
equipment are placed.

2.
Space permitting, a minimum of 8' by 8' plywood for MDFs; 4' by 8' plywood
for IDFs.

3.
Backboards will be mounted vertically.
C. 110 Termination Block Placement
1.
110 Termination blocks will be placed on the backboard with the horizontal
center line 48" AFF. 110 Termination block placement will follow the format
detailed on Attachment F. Deviation from the centerline placement will be
permitted only to accommodate growth.

2.
If the free space is from 24" AFF to 96" AFF, the centerline is placed
equidistant (or 60" AFF) to accommodate vertical growth of both voice and
data.

3.
110 Termination blocks will be placed on the backboard left to right.
4.
Spare locations on the backboard will be marked to ease future equipment
installation. No other arrangements (such as underground or riser in the
center) will be allowed unless agreed to by the UIS consultant.

D. VERIZON Network Termination and 110 Point Of Presence (POP)
1.
A 110 termination for all RJ21x's will be placed on the backboard by the wiring
contractor.

2.
The 110 block will have a 25-pair cable terminated and the other end run to
the RJ21X and terminated on an anphinal connector and connected to the
Verizon block.

E. Station Wiring (Horizontal Distribution)
1.
Standard station wiring is two separate sheathes of 4-pair solid copper twisted
pair 24 gauge.

39. For new construction, both voice and data horizontal cabling should utilized
Category 6 horizontal cable for the distribution of communications, plenum.
Avaya P/N 2071E-004XXX. Transmission performance specification for the
proposed 4 pair 100 ohm Category 6 cabling for shall be TIA/EIA 569-B.2-1.
Voice cabling should be white in color and data cabling should be blue in color.

40. For renovations, both voice and data horizontal cabling should be Category
5e horizontal cable utilized for the distribution of communications, plenum

rated, Avaya P/N 2061-004XXX and should meet or exceed Category 5e Link
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 18 of 32
performance outlined in the latest revision (568-B.1). Voice cabling should be
white in color and data cabling should be blue in color.

2.
All station wiring runs will be home runs. No other intermediate distribution
points will be used.

3.
Maximun station runs is to be 250'.
4.
Shielding may be installed at an extra charge where electrical isolation is
required. (It is not technically possible to provide all Network services over
shielded wire.)

5.
Teflon or Plenum covering should be used.
6.
Station wiring will be brought to the AVAYA 110 Termination blocks for voice
and AVAYA patch panels for data as follows:

o Voice wiring: run horizontally along the top of the backboard and down
the center of the area reserved for the specific station's termination
block.

o Data wiring: run vertically along the front edge of the backboard and

then horizontally along the bottom of the backboard to the center of the
area reserved for the DATA patch panels for that station location.

o Data patch panels may also be terminated on a standard 19 inch rack.
7.
110 C-4 clips are used for station termination.
8.
Raising the board off the wall using 2 by 3's and running the wire behind is
acceptable and preferred where possible.

9.
Station termination blocks will be spaced to accommodate the station cable
serving the existing number of locations.

10.
A 18A Distribution Ring will used between 110 columns (ID 104-049-
382)

11.
AVAYA 188 wire troughs (for voice and data) will be mounted across
the plywood frame between the VOICE and DATA blocks. Cross-wire will run
down and through the 188 wire troughs for VOICE and up and through for
DATA. All cross-wire will be supported in 188 wire troughs.

12.
Station wire will be installed to transmit high-speed data as either ISDN
digitized voice and data or standard data (for example; Ethernet or Token Ring
applications).

13.

Station wiring will not be installed near fluorescent lamps, high-voltage
sources, electrical motors, or other sources of interference.

14.
Splices in the cable plant are not acceptable because they compromise
the integrity of the inside wiring for high-speed data transmission.

15.
All cables run in ceilings for horizontal distribution must be bundled
together and supported from the floor above or the building structure inside
the ceiling. They can not be supported by the ceiling, ceiling hangers, or other
utilities in the ceiling and must not lie on the ceiling.

16.
Telepoles may be approved by the Harvard consultant in some cases.
17.
Unterminated wire drops from ceilings or exposed wiring along ceilings
are not acceptable.

18.
NEVER use staples to install telecommunications cabling.
F. Concealment
1.
Station wiring must be concealed for safety and aesthetic reasons. The
preferred concealment method is to fish the walls.

2.
Conduit, cable trays and raceways (wire mold) are acceptable alternatives
depending on the situation.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 19 of 32
3. Raceways (wire mold): if raceways are used, plastic raceways will be installed
in individual offices containing one or two jacks. Metal raceways will be
installed in open areas, large rooms, multiple jack locations, and hallways.

4.
Conduit, cable trays and raceways (wire mold) will be installed in accordance
with building and electrical codes.

5.
The UIS project manager will participate in sizing and design decisions.
G. Voice And Data Riser Systems

Planning a riser cable system requires some significant planning decisions. Among
these decisions are the total number of stations, number of stations planned for each
floor, intended use of the stations, and the location of IDF's and their distance from
the MDF. The following guidelines will assist planners in making those decisions.

Voice Riser - sizing criteria, installation specifications, and administration
requirements

1.
Composition
Composed of 24 gauge ARMM Cat. 3, twisted pair cable.

o Sizing
Riser cable pairs should be six (6) times the number of stations to allow

for the recommended 50% growth per station.

o Installation
Standard installation method is to run the riser cable in conduit or floor
sleeving. The cable will be terminated at the Intermediate Distribution
Frame (IDF) and the Main Distribution Frame (MDF) on 110 blocks.
Riser cable will be home run from the IDF to the MDF. There will be no
additional junction points between the IDF and the MDF.

o Administration
Process of documenting work performed during and after the
installation of the riser system. Requirements include labeling the voice
riser pairs in the basement as well as at the IDF location with the
station jack ID numbers.

o Cross-connects
110 C-4 clips are used for station termination in IDF's and the MDF.
They are also used to terminate riser cables, with the exception of the
last clip in each row. The last clip in a row terminates with a 110 C-5
clip. This clip covers the 25th pair of the riser even though it will not be
cross-wired.

o All stations must be cross-connected to the riser system. Six (6)
stations will be cross-wired per 25 pair row. The 25th pair will not be
cross-connected. Each station location on the station block should be
identical to the station location on the riser block.
Station labeling will be carried through to the MDF.
Data Riser System (stations more than 250 feet from data equipment
or building with IDF's)
The following Data Riser specifications apply only if the stations served

by the riser cable are more than 250 feet from the data equipment

o Composition
Composed of a 12-strand 62.5 multi-mode and 10/125 um 12 strand
single mode fiber riser rated cable, installed in innerduct, home run
from the IDF to the MDF.
All strands must be terminated on patch panels at both ends.
Multimode terminated with a silver or chrome colored connector and
the singlemode with a black colored (Siecor TER-156) connector.

o Sizing
The recommended fiber size is 12/12 strands.

o Installation
Contractors will leave service loops at both ends of the fiber by the
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 20 of 32
contractor when installation is complete. Fiber will be installed within
innerduct, and will be home run from the individual IDFs back to the
MDF.

o Administration
Fiber optic cable will be labeled at the MDF area with the floor where the fiber
originated and appropriate station information (labeling will be the same as the
IDF).

HARVARD UNIVERSITY Wire and Cable Standards

Quang Dung Technology Distribution Company Page 21 of 32
SECTION VII: INTER-BUILDING CABLE (HSDN)
The following specifications describe the installation of the fiber optic cable
for the HSDN backbone.

Fiber Optic Cable Composition
Fiber optic installation shall consist of a component that contains 12 strand
62.5/125 um multi-mode and 10/125 um 12 strand single mode fiber cable.

Fiber Optic Cable
The following fiber optic cable type will be used unless otherwise agreed to
by Harvard:

• cable construction shall be field-proven, double-buffered/double-filled
type which shall restrict water migration within the cable

• the contractor shall install fiber optic cable rated by the manufacturer
for temperatures between -40F and +160F

• axial strength member shall be made from a high-strength
dimensionally-stable, non-conductive composite material,
buffered with an energy absorber to improve the impact
and crush characteristics of the fiber optic cable

• intersplices of the fiber optic cable's core will be flooded with a
non-hygroscopic filling compound for added protection from moisture
ingress under freeze/thaw or high temperature conditions

• outer jacket shall be made from a proven polyethylene material and

sequentially marked.

Fiber Optic Cable Termination
Fiber optic cables and fiber strands specified shall be finished and
terminated in termination equipment as specified. Termination equipment
will be fiber optic Patch Panels with "ST" type connectors and be large
enough to accommodate the fiber optic cables and fiber strands. The vendor
will provide and install the fiber optic Patch Panels. All patch panel
enclosures will be large enough to accommodate all fiber optic terminations
possible at the panel. All strands must be terminated on Radiant /Pass &
Seymour/Legrand patch panels at both ends. Multimode terminated with a silver or
chrome colored connector and the singlemode with a black colored (Siecor TER-516)
connector.

Fiber Optic Testing and Acceptance
The vendor will provide Harvard with total individual link test and results
documentation on each fiber run, cable, and strand before acceptance of the
backbone.

Fiber Optic Functional Specifications
10/125 Micron Single-mode Fiber Specification
Functional Specifications - Fiber Cable
Maximum Attenuation:
@ 1300nm 0.4dB/km
@ 1550nm 03.dB/km
HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 22 of 32

Maximum Dispersion:
@ 1290 - 1330nm 2.6psc/nm-km
@ 1550nm 20psec/nm-km

Cutoff Wavelength 1030 - 1250nm


Specified fiber parameters:
Mode Field diameter @ 1300nm 8.5 ± 0.5 Microns
Zero Dispersion Wavelength 1311.5 ± 10nm
Attenuation Uniformity @ 1300nm and 1550nm 0.1dB
Core Concentricity 1.0 Microns
Clad Non-Circularity Ñ 0.98
Clad Diameter 125 ± 2.0 Microns
Coating Diameter 250 ± 15 Microns
Proff Strength 50 kpsi
Refractive Index Difference 0.36%
Core Diameter 10 ± .5 Microns

Other Parameters:
Index Profile Step Index
Glass Type Si - Ge
Lengths up to 12.0 km

62.5/1.25 Micron Multimode Fiber Specification
Functional Specification

Maximum Attenuation Range:
@870 nm 3.5 - 3.75dB/km
@1300 nm 1.5db

Minimum Bandwidth:
@850nm 160MHz-km
@1300 nm 500MHz-km

Specified fiber parameters:
Core/Cladd Offset 32.00 Microns
Cladding Diameter 125 ± 2.0 Microns
Core Ovality 6% Max
Coating Diameter 250 ± 15 Microns
Proff Strength 50 kpsi
Core Diameter 62.5 ± 3 Microns
Numerical Aperture 0.275 ± 0.015
Refractive Index Difference 2%

Other Parameters:
Index Profile Graded index
Glass Type Si - Ge
Lengths up to 2.0 km continuous reels


Fiberoptic Cable Requirements

Multimode fibers:
850 nm Maximum Attenuation 3.75 dB/km
Minimum Transmission 160 MHz-km
1300 nm Maximum Attenuation 1.5 dB/km
Minimum Transmission 500 MHz-km

HARVARD UNIVERSITY Wire and Cable Standards

Quang Dung Technology Distribution Company Page 23 of 32
Singlemode fibers:
1300 nm Maximum Attenuation 0.4 dB/km
1550 nm Maximum Attenuation 0.3 dB/km
Maximum dispersion at 1550nm - 20psec/nm-km
Maximum bent loss for a 75mm bend - 0.1db

• All multimode fibers must have a core diameter of 62.5um

• All singlemode fibers must have a core diameter between 8.0 and 8.5 um
• The cladding diameter for all fibers must be 125um
• All multimode fiber optic must be listed as FDDI gradev
• The requested fiber counts per route are a minimum, larger fiber counts may
be installed at the contractor's option

• For cables listed as single cables with mixed multimode and singlemode fibers,
the contractor may substitute multiple cables unless otherwise specified by
Harvard.

• The cable must not contain any conductive elements
Fiber Optic Cable
Installation Requirements
1. It is the contractor's responsibility to see that all installations and materials
conform to all applicable codes.
2. All fiber optic connectors must be of type ST.
3. All fiber optic terminations must meet the following requirements:
o maximum attenuation through a cross-connect from any terminated
fiber to any other terminated fiber - 2.0dB.

o maximum optical attenuation through any splice (fusion or mechanical)
- 0.3db
4. The specific paths of all cables must be approved by Harvard.
5. The specific mounting methods of all cables must be approved by Harvard.
6. All patch panels must be wall mounted type unless noted.
7. All splice boxes must be wall mount type unless noted.
8. All wall mount locations must be selected by Harvard.
9. All patch panels and splice boxes must have covers that can be closed and
locked, except where specified by Harvard.
10. All cables must be in innerduct if in conduit unless specifically exempted by
Harvard in writing.
11. Cable runs in some open corridors will require innerduct or conduit, these will
be specified by Harvard.
12. A cable loop, of at least 10 feet in length, must be provided for every 500 feet
of run and/or at each "major transition" along the cable's route. Major
transitions are considered to be: appropriate corners, entrances and exits to
conduits, and termination points.
13. At all termination points, fiber strands must be in protective tubes from the
cable's outer jacket to the connectors.
14. Three innerducts must be installed in any empty conduit unless specifically
exempted by Harvard in writing. Pull cords must be left in the unused
innerducts.
15. A pull cord must be left in any used conduit where requirement #14
was not followed unless specifically exempted by Harvard in writing.
Labeling Requirements

1.
All patch panels must have labels uniquely identifying each fiber including the
specific location of the remote end.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 24 of 32
2. All cables must be marked with durable tag (such as plastic) at each end of a
conduit, at each end of a passage through a wall or floor, in each hand or
manhole, at each corner, and at least every 100 feet of run. These marking
tags must have enough information to uniquely identity each separate cable.

3.
New cable routes must be marked with large metal or plastic CAUTION signs at
least every 100', these tags will be provided by Harvard.

4.
The covers of all patch panels and splice boxes must be labeled indicating:
o The presence of fiber optic cable.
o A phone number to call for questions (496-4736).
Test Requirements
1.
Attenuation must be measured in accordance with a procedures detailed in
EIA-455-59.

2.
All terminated and unterminated fibers must be tested.
3.
All fibers must be tested with an OTDR in one direction.
4.
All fibers must be tested with an optical power meter in both directions.
5.
All multimode fibers are to be tested at 850nm and 1300nm.

6.
All singlemode fibers are to be tested at 790nm, 1300nm and 1550nm
Documentation Requirements
1.
Two copies of the final documentation must be submitted to Harvard before
final job acceptance.

2.
The documentation must include:
o Copies of all test results.
o Accurate maps of all cable runs.
o If construction is required, a survey plan must be included. This survey
must follow the procedures listed in the Harvard University Planning
Group document "Surveying Standards and Recovery Notes"

Warrantee Requirements
All material and workmanship must be covered by a warrantee with a duration of at
least one year.

HARVARD UNIVERSITY Wire and Cable Standards


Quang Dung Technology Distribution Company Page 25 of 32
SECTION VIII: GLOSSARY
ANSI: American National Standards Institute
Administration: correct and consistent use of color, labeling, and numbering when
preparing and maintaining records of wire and cable work.


Access Point (AP): The central or control point in a wireless cell that acts as a

bridge for traffic to and from wireless devices in the cell. The AP also connects
wireless devices to the wired portion of the LAN.


Americans with Disabilities Act (ADA): U.S. Department of Justice regulations and
guidelines under civil rights law that ensure individuals with disabilities have access
to, or may use, public entities and government buildings.

American Wire Gauge (AWG): The standard gauge for measuring the diameter of
copper, aluminum, and other conductors.

Approved Ground: A ground that has been approved for use by the authority having
jurisdiction.

As-built: Documentation that indicates cable routing, connections, systems, and
blueprint attributes upon job completion that reflects changes from the planned to the
finished state

Attenuation: The effect of signal dwindling, experienced with accumulating line
length or distance of radio transmission.

Authority having jurisdiction (AHJ): The building official, electrical inspector, fire
marshal, or other individuals or entities responsible for interpretation and
enforcement of local building and electrical codes.

Backbone(s): The part of a premises distribution system that included a main cable
route and facilities for supporting the cable from the equipment room to the upper
floors or along the same floor to the wiring closets.

Backboards: fire-treated 3/4" plywood panels used to mount termination blocks at

the IDF and MDF.

Basic rate interface (BRI): The simplest form of network access available on (BRI)
the ISDN (integrated services digital network). The BRI comprises 2B + D channels
for carriage of signaling and user information.

Bend Radius: The radius of curvature that fiber or copper can bend without breaking
or causing excessive loss.

Buffer tube: Loose-fitting cover over the optical fibers in loose-tube construction,
used for protection and isolation.

Building distribution: horizontal and vertical wiring that comprise the Riser System
and the horizontal distribution used to connect the station outlets through the IDF's
and back to the building's MDF.


Building Entrance Facility: A facility that provides all necessary mechanical and
electrical services, that complies with all relevant regulations, for the entry of
telecommunications cables into a building.