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Missed opportunity
junko.yoshida   7/24/2013 8:31:21 AM
To me, using 2G for newly minted eCall box (to be rolled out in 2015) strikes as a huge missed opportunity. 

By investing in LTE, for example, like what GM is planning to do, there seems to be a variety of business opportunities for carmakers to mine. Am I wrong about that?

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Re: Security
bobdvb   7/24/2013 8:30:22 AM
An educational video:


3G isn't totally secure but 2G allows the base station to tell the phone to turn off the security mechanisms and 2G devices by default trust *any* base station.

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Re: Security
junko.yoshida   7/24/2013 8:17:52 AM
EU's eCall does not mandate which cellular connection the eCall box needs to use. 

So, it is a choice left to automakers.

Why is 2G less secure than 3G in eCall implementation? Could you please educate me on that? Thanks!

User Rank
bobdvb   7/24/2013 3:20:07 AM
Not only is E-Call a massive waste of money, but if it is going to have 2G technology it won't be secure! It is now trivial to mess with 2G so I worry about the consequences.

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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