Outsite plant

J.TC08D001 E. UuriintsolmonJ.TC08D003 Ts. BuyanbatJ.TC08D706 G. Zolboo

1. Outside Plant Technology 2.Protection3.Outside Plant Application

Issues

1. Outside Plant Technology

• Supporting Structures • Cable Characteristics • Underground cable • Feeder and distribution cable

What is outside plant technology ?

Supporting structure

Cable is classified according to its supporting structure:

Aerial cable supported on pole lines Underground cable enclosed in

buried conduit Buried cable placed directly in the

ground

Cable characteristics

Twisted pair cables Cable sheath

materials Cable pairs

OLD NEW

Underground cable

Feeder and distribution cable

2.Protection

• Electrical Protection • Protection Methods • Digital Loop Carrier (DLC)

Electrical protection

Prevent injury Prevent damage

Zone of protection

Protection methods

Methods: Insulating telecommunications apparatus Shielding communications cables Grounding equipment Opening affected circuits Separating electrical and

telecommunications circuit

Insulating Telecommunications Apparatus

Insulation. Satisfy electrical protection

requirements Conductor of from 1000 to 4000 V

Shielding Communications Cables

Lightning strikes A grounded shield wire buried above a communications

cable Separation to prevent arcing

between the shield and the cable.

Grounding Equipment

Principle of electrical protection Simplest form protector One side of the carbon block

Opening Affected Circuits

Method of protecting circuits and equipment

The communications conductors

Separating Electrical and Telecommunications Circuits

The minimum acceptable separation between power and telecommunications circuits .

Additional measure Sharing of a joint trench

3.Outside Plant Application Issues

Outside plant application issues

Including plans for both fiber and copper cable.

Depends on the number of stations. Flexible conduit can be plowed

underground.

Conclusion

Last of all Outside plant is the collection of cables, poles,

conduit, and fiber optics that interconnect central offices and connect the

central office to the subscribers’ premises. Wide-bandwidth signals travel across the country

in ribbons of fiber-optic cable, but must be converted to analog and piped to the customer over a pair of wires that may cut off any frequency higher than 4kHz.

When we prepared this presentation we learned about how outside plant is designed and constructed.

Reference

The Irwin Handbook of Telecommunications

Lecture of optic lesson www.google.com

Thank you for your attention!