The call just died, and for no apparent reason.
You were just walking down the street, for God's sake. So, let's talk about it: What happened?As a network engineer explained to me, in an urban environment in particular these cells' coverage areas assume weird shapes, due to reflection and refraction. A city---or anywhere where humans live, really---is a hostile, or at least action-packed, place for radio frequency communications. On your street, thick and varied buildings, built from concrete and steel and laced with wires and current, redraw the boundaries of a cell's coverage, pulling it out of shape and filling it with pockets and weak spots. So while that grid of cells in theory leaves no spot uncovered, in reality these vibrating fields of coverage...
Source:
http://respectedadmins.com/blog/why-your-call-dropped-annoyances-explained/
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