WDM transmission/Backbone network/ combination of OTM,OADM,ROADM,OLA and ILA sites for long distance 

concept explained in a very Simple & best way. Thanks &kudos.

Thanks bhai , bahut help Mila

Very nice

Thank you PANKAJ KUMAR Sir😍😍

Nice bro

I watch so many videos on WDM , But urs is most simple and clear explanation. My gratitude.....

Thank u bro

Great explanation sir...🌏

Pankj bhai , OTN p vedio bnana

Pls make more video you grown with it and create subnet of yours

Higly appreciated Bro.the way you explained are awesome set of skills

Excellent learning....Thank u

Before watching the video , I 👍 it...

Feel like, this video would never get ended...

Please make more videos for tx technology 👍( you do awesome explanation)🙏

Keep it up pankaj, keep making daily videos

Thanx dear for this useful learning video. Please explain in detail about OTN technology.

hi Pankaj sir, i become big fan of you, wonderful explanation. where you get this data, which book you prefer. please share me your number or mail details. please upload the video of OTN technology.........i am requesting you please upload it ASAP.....i am preparing for interview.

Please make video on OTN network , i have some confusion about OTN technology.

ILA site for 80 km or 180 km??

Can you explain with one real time design diagram ...service request order chart

What is the difference between an ILA and OLA. why two names

kindly make a video on BMC IT remedy🙏🙏🙏🙏🙏🙏

pls share otn video

Amp addition distance suggestion is not correct...

Sir apka no milga ques puchne hai

English not gibberish

Very nice