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16 Mar Latest News

A Major breakthrough in Txmn system configuration

A Major breakthrough in Cpan / Txmn system configuration has been achieved by the young engineers of BSNL Kerala. The team members are Sri Dipu Chandran SDE Cpan , Smt Anila KS SDE CNOC EKM , Sri Binu Jose AGM Proj Coordination , Sri Bijoy R SDE BSS , Sri Arun KG SDE BSS and Sri Bijeesh KP SDE OMCR.

Earlier BAs were facing many issues for rolling out new 4G. One major issue faced then was, the old and outdated transmission equipments at BTS locations as well as exchanges. The BTS locations where the end link was CPE, were major bottlenecks. The Tejas CPEs connected to Huawei MADM had access issue, others had bandwidth issue and lack of ports for connecting 4G etc. Tejas eNodeB had integrated transport card, but we were unable to use them because of fiber shortage and E1 issue. E1 issue had become a concern as E1 was needed to continue our 2G for some more time. Tejas eNodeB had 4E1s but extension of E1 through eNodeB was not possible.

The team member Smt Anila of CNOC Ernakulam came out with an idea of cascading Tejas eNodeBs.


Below is the methodology used

One remote eNodeB site was cascaded to one Tejas eNodeB physically. The remote 2G E1 was wired to the remote eNodeB, and dropped at Exchange eNodeB, then routed to BSC as it was working before. This worked and the remote 2G was now working through eNodeB and this eliminated the need of CPE/Anode at remote location.

Also, the team modified the plan and removed the physical cascading of eNodeBs and made it work through logical cascading.

Similarly, there is possibility of cascading another 3 remote locations of an exchange ( maximum 4) and spare the end link equipment. This gave a big relief to the projected requirement and concerns about adequate number of end links.

Sri Dipu Chandran is Asst Circle Secretary AIGETOA Kerala . AIGETOA is proud to have such wonderful people in its fold and we congratulates all the officers involved in this amazing feat and encourages the every young engineers in BSNL to bring about more such accolades and glory to BSNL.

(Click here for PPT)


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