IEEE Consumer Electronics Magazine - October 2016 - 68

Hacking the House
Chapter 3
Nonstop Internet.
By Stuart Lipoff

I

n chapter 2 of this series, i described how i employed
session initiation protocol (SIP) phones as doorbells in
my Boston, Massachusetts, home to ring the phones at
our second home in Las Vegas, Nevada, thereby
enabling us to answer the door remotely. A remote
doorbell is important to us, as we may be away for
extended periods. However, the reliability of my remote
doorbell application is only as effective as a reliable Internet Protocol (IP) pathway, which in turn is dependent
upon a transmission pathway supported by reliable network elements inside and outside my homes. Documented
in this article is how I met the challenge of maintaining
reliability by creative systems integration using mainly
off-the-shelf subsystems.
There is little I can do to enhance the reliability of the
already well-designed network elements outside my
home. But because cost considerations mandate that the
in-home networking components under my control be
consumer-grade products, which by necessity do not
incorporate the redundant fault-tolerant features of commercial-grade products, there are things I can do to
enhance these components. You might well ask, however,
if there is truly a need to maintain reliability for a mere
remote doorbell.
If the only need to maintain Boston-to-Las Vegas IP
connectivity were remote doorbell support, I would agree
that the need is somewhat trivial. However, you will soon
see that I rely upon effective Internet connectivity for much
more than just a remote doorbell. The full set of applications supported by my Boston-to-Las Vegas link includes
▼ the telephone (extending all my residential and business
phone lines from Boston to Las Vegas so we can
answer phones transparently to incoming callers)
▼ an alarm system (being able to set, reset, and disable
the alarm system, as well as remotely unlock the door
to allow access to authorized people)
▼ surveillance (remote viewing and control of a video camera).
Because my set of applications depends not just on my
Internet service provider's (ISP's) network but also on a
Digital Object Identifier 10.1109/MCE.2016.2590179
Date of publication: 22 September 2016

68 IEEE ConsumEr
Consumer ElECtronICs
Electronics magazInE
Magazine

^

OCTOBER 2016

2162-2248/16©2016IEEE



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