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Emplus_Charlie

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Everything posted by Emplus_Charlie

  1. No. The guest network is isolated.
  2. Install one device rather than two. If you are an installer where time is money, it makes a big difference.
  3. Well.. the obvious reasons are the answer. Environmental Factors (Weatherproofing, Temperature, Corrosion resistant) Antenna consideration There's nothing to stop you using an outdoor AP inside. But you can try to use an indoor AP outside, see what happens.
  4. Can't find the model, but I know it has been done already. Basically, when getting the IP Camera to connect to your router (SSID / KEY) there are currently these methods. 1. Use Bluetooth or WiFi to connect to the Camera and configure it directly. 2. On your phone, the app site-surveys, you select the SSID and enter the Key. the app will generate a QR-Code which the user "shows" to the camera to read. 3. Similar to method 2, but instead of generating a QR-Code, the phone converts the SSID/KEY to some audio sound which is played to the camera. The camera's microphone will listen and decode the SSID/KEY, then it will make the connection. Why use sound? Disadvantages of: Method 1 - Bluetooth adds costs to the hardware, WiFi method the failure rate is high. Method 2 - Failure rate of QR-Code scanning by the camera is high because user cannot know the camera can see it properly. Method 3, seems easy to the user. Just put the phone next to the camera and it will work.
  5. Fast handover is when you are roaming, not for the initial connection. Which Ap your iPhone connects to is decided by.... The iPhone. The AP cannot control that behavior of the client.
  6. Unfortunately you may be experiencing some bugs or side effects to the feature. you may need to contact engenius support for your issue. If possible, it would help if you can capture some logs or packet data.
  7. Emplus_Charlie

    AP Camera

    The AP is dual concurrent radios. One would be configured as AP mode, the other is kind of like Repeater mode (Backhaul + AP). Therefore for the band used for backhaul, you will lose half the bandwidth like typical Repeater.
  8. Hand Over is when you have multiple APs in an environment, and typically the signals will overlap. Client devices may not automatically switch to the AP with the best signal if you are moving, they may "stick" to the original AP and try to maintain the connection. This will not give the user the best performance possible since there is another AP at closer range / better signal. So the Hand Over function is when the client has low RSSI, which can be assumed to have moved away from the AP, then the AP will kick it out to force the Client to redo site-survey and reconnect. Typically the new site-survey will select the closer AP with better signal. Therefore, this is where the RSSI setting comes in. It is the trigger point where the AP will kick the client. If you want the AP to allow the Client to maintain connection at even lower signal, then you can adjust the RSSI setting.
  9. If you do not enable network turbine, then the upper limit of WAN to LAN routing will be around 300 to 400Mbps. If enabled, it could reach 700~800Mbps. However it is kind of taking a shorter path through the system, so some processing will be skipped. Hence things like QoS will not be able to be applied.
  10. For the environment you describe, to be honest, I don't think the users will "feel" it to be better. Especially where it only improves from AP to Client transmission. Client to AP is mostly non-Beamforming so it will be normal. I think good Tx/Rx circuit and Antenna design is much more important. Beamforming is just a very small bonus.
  11. I think it is difficult to estimate the performance increase based on throughput because it depends on the what the current RSSI is and which datarate is currently used. But I think this video explains Beamforming quite well. https://www.youtube.com/watch?v=8rMtqRObvvU When two waveforms are in-phase, then their amplitude (strength) is added together. So assuming the client can receive the two waves in exactly the same strength, then 3dB (double) is added to the RSSI. But because MIMO can bounce off walls/items and depending on how well the algorithm can decode these in-phase and out-of-phase signals, the end result varies. In the video above, they showed 10dBm increase in RSSI. How the 10dBm increases throughput will also depend on other factors. Hence you cannot really put a numbers on the performance increase, only that yes, there will be benefits. However, there is another thought is that when doing certification, beamforming will be added to the EIRP limit. So for 3Tx, it will cause another 4.77dB that MAY need to be reduced from Tx Power. Therefore, you can evaluate the trade-off between regulatory power decrease, and "theoretical" benefits of beamforming when you plan your product.
  12. It enables a kind of accelerated NAT routing method. You will only see a difference if your internet connection is over 300Mbps.
  13. Guest SSID is isolated from your LAN network. So the guests cannot establish connections to wifi devices on your regular SSID and your LAN ports.
  14. If you are talking about beamforming, then the performance enhancement should be similar whether it is one client or multi client. This is because the beam is directed at each client on a per client, per packet basis.
  15. Beamforming is only enabled on wave2 products to implement MU-MIMO function. 11n and 11ac wave 1 does not have Beamforming enabled.
  16. Emplus_Charlie

    AP Camera

    No, the Camera and AP are separate hardware components. So the AP function should be the same as any other EAP/EWS of the same spec.
  17. Nice formula! It seems to be based on the inverse square law (1 / x^2). http://hyperphysics.phy-astr.gsu.edu/hbase/forces/isq.html However one thing to note is that it is for free space loss, meaning direct line of sight and in outer-space. So if you were calculating for a transmission from Earth to Mars, then this formula can work well. However on Earth ground level, you have things like gases in the atmosphere (air), how much water vapor (humidity) is in the gas can impact signal propagation. This will change with altitude. Also for outdoors long distance reflections from the ground, and diffractions from surrounding objects also impact the signal retention. http://www.wirelesscommunication.nl/reference/chaptr03/pathloss.htm For indoors, need to consider building materials...... http://ftp1.digi.com/support/images/XST-AN005a-IndoorPathLoss.pdf There are many things to consider, hence answering "how far can I transmit" is not so easy to answer.
  18. Ignoring things like multiple antenna MIMO designs (xTxR), the antenna designs methodologies between A/N and A/AC antennas should be similar as both operate in the same 5Ghz frequency bands. The 80Mhz or 160Mhz does make much difference. So yes, you can use A/N antennas on 11ac products. It matters more to have antennas that suits your installation application. Eg: Omni vs directional, vertical beam angles, polarization etc.
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