title: Maximum number of ZigBee devices
body: <p>I am currently digging into ZigBee and the following question came to me:</p>
  
  <p>Each ZigBee device has a 16 Bit short address, which means I can connect up to 2^16=65536 different devices (minus a few reserved addresses of course). Now each devices can bind up to 2^8 = 256 different services (since a few "ports" are also reserved, the maximum is actually 240 here). I was wondering, if these 8 bits are added to the 16 Bit short address, which means the actual address has 24 Bits or if these 8 bits are taken from the short address, which means, that the short address would effectively only have 8 Bits, which again would mean I could "only" connect 256 devices?</p>
  
  <p>I am a little bit confused now, especially since most paper/articles about ZigBee use the term "node", which I assume means something like service, but not necessarily a new (different) device. </p>
  
  <p>Any clarification?^^ </p>