October 2018
Intermediate to advanced
555 pages
17h 33m
English
Content preview from Principles of Synchronous Digital Hierarchy
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xix
Preface
Dear friends,
I am an engineer by qualication and a signaling and telecommunication
professional by occupation. I work in the Signaling and Telecommunication
Department of the Indian Railways. Our job is to install and maintain vari-
ous signaling and telecommunication equipment required for railway oper-
ations. We have a phenomenal variety of signaling equipment with us, from
the oldest semaphore signaling systems to the latest electronic interlocking
systems and a variety of trafc control, management, protection, and data
logging systems. On the telecommunication front, we are engaged in the
installation, operation, and
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.