One Article Review
| Source |  AlienVault Lab Blog |
|---|---|
| Identifiant | 8432999 |
| Date de publication | 2024-01-02 14:58:00 (vue: 2024-01-02 16:07:40) |
| Titre | Coupe de cordon: câbles que vous ne connaissiez pas! Cord cutting: Cables that you didn\\'t know about! |
| Texte | The content of this post is solely the responsibility of the author. AT&T does not adopt or endorse any of the views, positions, or information provided by the author in this article. A week before my 15th birthday in September 2023, and quite coincidentally in time for my favorite phone\'s 15th iteration (cough cough, parents, hint hint), AT&T along with AST-Science successfully made a call. Well, in the 21st century that’s not very “Mr. Watson, come here. I want to see you.”, but this call was on another level, or as one could say, out of this world! To back up a bit, telecommunications as we know it has been a terrestrial endeavor since those words were uttered by Dr. Alexander Graham Bell to Mr. Watson. While we are all too familiar with the telephone poles and cables outside our homes, alongside highways (at least as my mom remembers), and train lines (from my grandfather), there are in fact an additional 745,645 miles of cables in the ocean floor connecting various countries. Why are these bits of cable important, you may ask? Well, as much as we may love our movies and media and their portrayal of communication between 2 super villains using phones that bounce signals off various satellites and detour them to different countries to set off a countdown of a doomed nuclear missile countdown, the reality is that the longest distance your wireless signal travels from your mobile phone is to your closest cell phone tower. Let me repeat that again-when you call your friends to your house for “Thanksgiving leftover pizza” the longest distance the wireless signal travels from your mobile phone is to your closest cell phone tower. No bouncy-bouncy, no detours. Sorry Hollywood! Hello, practical physics! If that didn’t make you question reality, let me explain this (consider this my PSA for the day!) a little more. Each time you pick up your mobile phone to make a call, your analog voice is converted to digital (that Matrix style 0’s and 1’s) and sent via electromagnetic waves through your phone\'s antenna to the closest cell phone tower. From the tower, these waves are converted to light pulses (I know this is more fun than the bouncy-bouncy!!) which are then carried at the speed of light via underground optical fiber cables (see I told you those cables were important) to the destination cell tower where they are converted back to electromagnetic waves and sent to the mobile phone of the person you are calling and converted back to analog-all in a split second. Now there is other fun stuff happening, like locating the cell phone, knowing if the phone is busy, and worrying about frequency bandwidths, but hey, I am taking a little bit of Hollywood artistic license here. Not to mention, I have completely skipped voice-over internet/data. But we do have to get back to AT&T and AST. According to their website, AST SpaceMobile is building the first and only global cellular broadband network in space to operate directly with standard, unmodified mobile devices based on an over 2600 IP and patent portfolio. In 2022, AST launched “Bluewalker3” satellite to communicate directly with unmodified mobile phones, with a future goal of launching multiple commercial satellites aptly named “BlueBirds”-well, kudos to whoever came up with the names, competitively speaking that is, without naming names. While September 2023 was n |
| Envoyé | Oui |
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| Tags | Mobile Medical Commercial |
| Stories | |
| Notes | ★★★ |
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