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  2. TD-2 - Wikipedia

    en.wikipedia.org/wiki/TD-2

    TD-2 was a microwave relay system developed by Bell Labs and used by AT&T to build a cross-country network of repeaters for telephone and television transmission. The same system was also used to build the Canadian Trans-Canada Skyway system by Bell Canada , and later, many other companies in many countries to build similar networks for both ...

  3. Fix sending and receiving issues with third-party email apps

    help.aol.com/articles/cant-send-or-receive-email...

    If your account is working on a web browser and you made sure you're using the right server settings, then update your email app to the newest version available. If you're still experiencing issues with your app, contact the manufacturer. Also, access your AOL Mail on a web browser. Keep in mind - For two-step verification, generate an app ...

  4. Troubleshoot a dial-up connection - AOL Help

    help.aol.com/articles/troubleshooting-a-dial-up...

    An active internet connection is required to be able to access all the best that America Online® offers. If you're using dial-up internet and can't connect, try the following troubleshooting steps: Check the dial tone - If you DO have one, it's likely the problem has something to do with your computer. If you DON'T, it's likely the problem has ...

  5. T-carrier - Wikipedia

    en.wikipedia.org/wiki/T-carrier

    The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission with the D1 channel bank.

  6. iOS version history - Wikipedia

    en.wikipedia.org/wiki/IOS_version_history

    Apps were also changed to run from the user mobile instead of the root superuser as part of the update. [21] iPhone OS 1.1.4 was the final iPhone OS 1 update for the first-generation iPhone prior to the release of iPhone OS 2, and was released on February 26, 2008, while iPhone OS 1.1.5 was the final iPhone OS 1 update for the first-generation ...

  7. TCP half-open - Wikipedia

    en.wikipedia.org/wiki/TCP_half-open

    The term half-open connection can also be used to describe an embryonic connection, i.e. a TCP connection that is in the process of being established. TCP has a three state system for opening a connection. First, the originating endpoint (A) sends a SYN packet to the destination (B). A is now in an embryonic state (specifically, SYN_SENT), and ...

  8. Watch as US Coast Guard gives update on missing Titanic ... - AOL

    www.aol.com/watch-live-coast-guard-gives...

    Watch as the US Coast Guard gives an update on the missing Titanic submarine on Thursday, 21 June. Captain Jamie Frederick from the First Coast Guard District led a news conference from Boston ...

  9. 2024 CrowdStrike-related IT outages - Wikipedia

    en.wikipedia.org/wiki/2024_CrowdStrike-related...

    On 19 July at 04:09 UTC, CrowdStrike distributed a faulty configuration update for its Falcon sensor software running on Windows PCs and servers. A modification to a configuration file which was responsible for screening named pipes, Channel File 291, caused an out-of-bounds memory read [14] in the Windows sensor client that resulted in an invalid page fault.