Android Enterprise evolves at a rapid pace. As an inevitable result, there is a trail of confusion with terms being introduced or changing meaning often. Can you tell the difference between the following: Device Policy Controller, Device Administration API, Device Owner, Device Policy Manager, User Manager, Android Management API, Profile Owner? Let’s sort it out (in a relatively chronological manner)!
In this post we will talk about one extremely simple, yet little-known way of extending AW functionality beyond the GUI limitations. Read on if you want to know how to apply any MX setting via AirWatch to your Zebra device.
With most MDM/EMM solutions you are limited to whatever options are available in the GUI (I’m looking at you, AirWatch). SOTI in this regard looks weird, since the number of settings is not particularly rich, which makes it seem limited. However, SOTI has the super-awesome SOTIscript, and SOTIscript has a number of super-awesome (but barely documented) script commands.
Today, we will take a look at how to use those commands to change (virtually) any Android OS setting available on your device via SOTI MDM.
We all know the “non-overlapping” channels 1/6/11 in 2.4GHz (5GHz matter is similar). Do they really not overlap? I keep bumping into this in conversations, and would like to create a point of reference (with pictures) instead of having to repeat same old over and over.
Since we a dealing with broadband technology, the signal is in reality not 100% contained within the allocated 20Mhz band – we only see the tip of the iceberg. Here’s the official 802.11 20-Mhz OFDM channel spectral mask. Note that the “20Mz” channel actually goes up to 30Mhz in every direction (60Mhz total width), albeit up to -45dB weaker, than the central 20Mhz flat part.
Now, let’s combine the masks for all the “non-overlapping” together and enjoy the view.
Of course, if the APs are spaced far enough, the effect of side bands will be negligible: if I already hear the AP’s central frequency at -87dBm, hearing the sidebands at another 20-26dB lower will do well below the sensitivity threshold. However, if this is not adhered to, here’s a spectrum analyzer capture of channels 1 and 11. Can you see the AP in channel one? What chances are for it to be heard?
Even non-overlapping channels overlap
Maintain separation. Either calculate using tools or use 3-5m as a rule of thumb (better use tools!)
Stacking APs on top of each other to provide triple density seems a good idea but only works if you are Xirrus, but even they stopped doing it, as far as I know.