FIBER NETWORK—ACCESS

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Fiber was introduced in commercial network around mid 80’s.

Deployment of optical fiber cable has enhanced  stability & reliability of access telecom network.

 

Fiber is being laid  in intracity network so as to cater requirement of ::

 

a)     voice telephone applications ( fixed analog / digital lines )

b)     mobile applications ( connecting MSC , BSC & BTS of GSM/CDMA networks )

c)      Ethernet applications

d)     Clear channel ( E1 , DS-3 bandwidth requirements )

 

Transport or transmission network is built up of SDH / CWDM equipments with ADM ( add drop mux ) at different locations with in ring ( METRO RING ).

 

Diagram of metro ring with ADM ::

                                                                                                              

 

 

Text Box: subscriber

Text Box: ADM-1

Text Box: DLC/DSLAM

Text Box: ADM-10 Text Box: ADM-11 Text Box: ADM-9 Text Box: ADM-8 Text Box: ADM-7 Text Box: ADM-6 Text Box: ADM-5 Text Box: ADM-3 Text Box: ADM-2 Text Box: ADM-4

 

Text Box: RING-3 Text Box: RING-2

 

 

 

 

Text Box: DXC AT TRANSMISSION ROOM OF SWITCH LOCATION

 

 

Text Box: SWITCH-ACCESS/LONG DISTANCE

 

 

 

 

 

 

Text Box: RING-1

 

 

 

 

 

 

 

All rings terminate on DXC ( DIGITAL CROSS CONNECTS ) so as to make traffic switch over from one ring to another...DXC is also connected to switch.

 

ADM-1 is connected to DLC/DSLAM through electrical/optical E1/T1....DLC/DSLAM is connected to subscriber via copper network ( network is deployed through-out city with this concept using various ADM locations as shown in fig. )

 

These fiber rings are deployed with auto protection ( self healing facility )

 

 

      For detailed information , please contact :: vsaxena69@hotmail.com