Blackberry down

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Yesterday one of the big news (Reuters) in the technology arena is the down of Blackberry (a.k.a., the Crackberry) email sevice in north America. This obviously has huge impact on the business and goverment users as they rely on device for email. But how could this happen? Isn’t blackberry supposed to be more reliable than the mobile phone network: one example is in 911, Dick Chenny got his Blackberry working while many cell phones users in White House and Congress stopped working.

Well, while the Blackberry is usually reliable, it is not perfect. According to the news, it appears the networking center of RIM had a glitch yesterday. As shown in the picture below, every email has to route through RIM’ networking center (or data center).

blackberry architecture pic
(source,, a full size architecture picture can be seen here.)

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