Thereby, they create voice over IP (VOIP) signal that can cover a small indoor area. When working, they are to be connected to the Internet. AT&T Microcells and T-Mobile CellSpots (Femtocells).ĪTT Microcells or Tmobile Cellspots are based on Femtocells technology. However, all of these are used to improve cellular coverage.Ī cell phone signal booster amplifies a cellular signal existing outside, and that amplified signal can then be used by cellular devices indoors, while a femtocell (ATT MicroCell or Tmobile CellSpot) is essentially a cellular base station with a broadband Internet connection that creates a cell signal to cover a small area. Whereas cell phone signal boosters are based on a different Bi-Directional Amplifier (BDA) technology so they work differently. AT&T Microcell and T-Mobile CellSpot are both are based on femtocell technology.
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