Telecom Site Components in brief

Site :

-it is a telephone mobile station that provides the coverage, so that people can make calls.
-it is some antennas that are connected with cables to a small room called a shelter that contains the following equipment:
*BTS ..base Tran receiver station
*Microwave.

*Air condition (A/C)   
*Fire Alarm Box.
*Fire Sensor
*Temperature Sensor.

*Power Distribution Panel

*Batteries.

*Cable Tray

*Duct.

*DC Cables

*BIB Cables.

*DDF box
*RF cables.

Power Distribution panel:

-it s a box that contains all the circuit breakers of all the equipment in the shelter from the lights to the BTS cabinet.

-It also contains the main circuit breaker.

-It also contains the timers of the air condition (a/c).

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Batteries :

-The batteries work when the current (3 phase)  is cut down so that BTS still provide coverage.

The batteries is connected to the rectifier.

DDF :

-DDF box contain 5 krones which the wire is connected to :

# the Wires :

• the BIB cable which carry the E1 to the BTS cabinets
• The route cable which carry the E1 from the Krone of the link.
• The PIX cable which carry the alarms to the BTS cabinet.

#The wires must be connected good so it do it’s job.

#The wire must be moving in a proper way in the box.

Cable tray for RF and DC and BIB:

-The picture shows that the RF cables must be far from the DC cable from the BIB cable

-The cables must be labeled so we can know from the look the where it come from and to where it is going.

-It is not acceptable that the cables comes cross to each other.

 Micro Wave Indoor Stand :

-The stand contains the microwave link and it’s DDF.

-The link connect the site to the another site or to the BSC through the microwave dishes.

-The microwave stand must be connected good to the floor and must be connected to the main earth bar of the shelter.

Fire Alarm Box:

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Sensor :

There are 3 sensors

1 sensor for the door

2 sensor for temperature which are adjusted for the temperature we need

Rectifier :

-It is used from AC 3 phase to DC

-The batteries, the link and the BTS cabinet through circuit breakers.

BTS :

Out Door Components:

 more details about Antenna click here

-The antenna comes from it to the shelter from 2 to 4 feeders

-The feeder enter the shelter and is connected the RF cable.

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Electric generator with fuel in case of no Source Power for the site 

Author : telecom engineer

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