Access Network
We learn about basic network in basic telecommunication networks to understand their principals and operation. The main and the very important network is access network when someone on the basic learning.
An access network (Outside
Plant) is the network that has series of wires, cables and equipment lying
between a consumer and service operator. This is the only one network customer
can see from this eyes.
Block Diagram of Access Network |
Exchange – Exchange is he
center where the switching equipments and DSLAM placed. Switching equipment
connects the customer to caller party by analyzing the dialed number. And DSLAM
is used to provide the DSL service to customers. And MDF stands for main
distribution frame. The MDF is a termination point within the local telephone
exchange where exchange equipment and terminations of local loops are connected
by jumper wires at the MDF.
Street cabinet - Street
cabinet is the device located in the street in between local exchange and the
customer. Big size cables having much number of pairs are terminated at
cabinets and they are distributed to different customer’s locations through
smaller size cable having lesser number of cable pairs.
DP – DP stands for
Distribution point. DP is used for termination of secondary telephone network
to the subscriber drop or service line cable pairs.
Drop wire – Drop wire ends
the access network. It is used to connect customer premises equipment with
Distribution point.
Customer premises
equipment (CPE) - customer premises equipment are Discharger, Rosette box,
Splitter, and modem.
Access Network |
Today service operators
supply additional services such as xDSL based broadband and IPTV (Internet
Protocol Television) to customers using access network. The access network is
again the main barrier to achieving high data rate to customers, because even
though providers configure and update their core network there can be lot of
issues in access network due to structure of the cabling and high attenuation. Without
understanding or even knowing the characteristics of these enormous copper
spider webs, it is very difficult, and expensive to connect new customers and
assure the data rates required to receive next generation services.
Throughout this article I hope you may get some thing.
This provides very basic explanation and future will cover more. Comments are well come. Thank you.
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