Editing IrDA (section)

===IrLAP===
The mandatory '''IrLAP''' ('''Infrared Link Access Protocol''') is the second layer of the IrDA specifications. It lies on top of the IrPHY layer and below the IrLMP layer. It represents the [[data link layer]] of the [[OSI model]].

The most important specifications are:
* Access control
* Discovery of potential communication partners
* Establishing of a reliable bidirectional connection
* Distribution of the primary/secondary device roles
* Negotiation of QoS parameters

On the IrLAP layer the communicating devices are divided into a "primary device" and one or more "secondary devices". The primary device controls the secondary devices. Only if the primary device requests a secondary device to send, is it allowed to do so.