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IrDA defined four kinds of infrared links to support different data rates. Included in these links are Serial Infrared (SIR) supporting speeds up to 115.2 Kbps, Medium Infrared (MIR) supporting 0.576 Mbps and 1.152 Mbps data rates, Fast Infrared (FIR) supporting a 4.0 Mbps data rate, and Very Fast Infrared (VFIR) supporting 14.0 Mbps.

In addition to the base standards, IrDA has specified several optional layers such as:

  • Tiny TP (Tiny Transport Protocol) provide independently flow controlled transport connections segmentation and reassembly.
  • IrCOMM determines how different devices can talk to each other via infrared.
  • IrOBEX. (IrDA Object Exchange) is a communications protocol that facilitates the exchange of binary objects between devices
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Wireless networks using infrared light are limited to those that use the what protocol?

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