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  2. Troubleshoot a broadband internet connection - AOL Help

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

    If you don't have another browser, download a supported one for free. 2. Check the physical connection - A loose cable or cord can often be the cause of a connection problem. Make sure everything is securely connected to the wall and device. 3. Reboot your modem/router - Sometimes the old "turn it off and on again" approach actually does work ...

  3. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    For very low-power systems, such as mobile phones, signal strength is usually expressed in dB-microvolts per metre (dBμV/m) or in decibels above a reference level of one milliwatt . In broadcasting terminology, 1 mV/m is 1000 μV/m or 60 dBμ (often written dBu). Examples. 100 dBμ or 100 mV/m: blanketing interference may occur on some receivers

  4. Plain language radio checks - Wikipedia

    en.wikipedia.org/wiki/Plain_language_radio_checks

    A plain-language radio check is the means of requesting and giving a signal strength and readability report for radiotelephony (voice) communications, and is the direct equivalent to the QSA and QRK code used to give the same report in radiotelegraph communications.

  5. Wireless site survey - Wikipedia

    en.wikipedia.org/wiki/Wireless_site_survey

    A wireless site survey, sometimes called an RF (Radio Frequency) site survey or wireless survey, is the process of planning and designing a wireless network, to provide a wireless solution that will deliver the required wireless coverage, data rates, network capacity, roaming capability and quality of service (QoS). [1]

  6. Check whether your modem works with Mac OS X - AOL Help

    help.aol.com/articles/check-whether-your-modem...

    4. In the Name your new location box, type Test, and then click OK. 5. Click the PPP tab. 6. In the Telephone Number box, type a local access number, and then click Apply Now. 7. On the menu bar, click the phone icon, and then click Connect. Back to Top

  7. Received signal strength indicator - Wikipedia

    en.wikipedia.org/wiki/Received_signal_strength...

    Cellular signal strength of -74dBm (or 66 asu) displayed on a smartphone.Also shown: signal bars of two cellular networks, and signal bars of a Wi-Fi network. In telecommunications, received signal strength indicator or received signal strength indication [1] (RSSI) is a measurement of the power present in a received radio signal.

  8. Modem - Wikipedia

    en.wikipedia.org/wiki/Modem

    A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information. The goal is to produce a signal that can be transmitted easily and decoded reliably.

  9. Data Carrier Detect - Wikipedia

    en.wikipedia.org/wiki/Data_Carrier_Detect

    On a data modem, the carrier's loss equates to the connection's termination. Much like the Ring Indicator signal, on a PC's serial port, changes to the DCD signal state can generate a hardware interrupt that can be captured by the processor any time the DCD signal changes state, preventing the PC from needing to constantly poll the pin.