TDMM Chapter 12 Flashcards
(100 cards)
Easement
A right acquired by one party to used land beloning to another for a specific purpose
HH
Handhole
Innerduct
Non metallic duct placed in a larger pathway
MH
Manhole
NI
Network Interface
OSP
Outside Plant
Service Diversity
The palcing of alternate facilities to temporarily replace main system in case of failure
(two internet services)
Underground Facilities
Cables in underground conduit with manholes, handholes or pull boxes to access them
Name three critical factors to consider when planning for maintenance and future growth for a facility where campus backbone cables exist
- Familiarity with routes
- Working and Spare capacity
- Cable composition
Name five advantages of underground conduits
- Provide out of site service
- Adaptable for future growth
- Economical over long life
- Provide cable protection
- Minimizes repairs needed
Name four disadvantages of underground conduits
- High installation cost
- Require careful planning
- Possible path for water or gas to enter building
- More installation time than aerial or direct bury
Name three advantages of direct bury
- Provide out of site service
- Low installation cost
- Easy to move around obstructions
Name two disadvantages to direct bury conduit
- inflexible for future changes
- No extra cable protection
Name two advantages of aerial pathways
- Quick installation
- Readily accessible
Name five disadvantages of aerial pathways
- Ugly
- Require clearances for people and traffic
- Could damage building exterior
- Environmental conditions could damage
- Issues when poles are owned by others
Name four ways to bring balanced twisted pair cable onto a customers property
- Underground entrances
- Buried entrance
- Aerial entrances
- Tunnel systems
What factors are used to determine how many conduits and how large the conduits need to be for a given telecom service entrance
The number, size and types of cable to be used to serve the telecom service entrance
What are BICSIs recommendations for the number and size of conduits for each telecom service entrance point?
Four 4” conduits, with at least one spare
Why are innerducts recommended when optical fiber cables will be used inside conduits?
Innerduct ensures the maximum amount of cables can be placed in the conduit
Why is a copper conductor added to a condiot that contains fiber?
For locating purposes
Why would an access provider and customer owned cabling need to share a telecom service entrance?
To reduce installation costs
Name three risks associated with sharing an entrance conduit
- Reduce ability to provide extra cable into the EF
- Could damage cables with improper installation
- May not be permitted by access provider or AHJ
True or False
The AP is required to build the EF for any facility where the AP supplied the conduit from the property line to the building
False
How many 90 degree bends can be included between pulling points when installing underground entrances?
No more than two