L2CAP

Encyclopedia : L : L2 : L2C : L2CAP

L2CAP, which stands for Logical Link Control and Adaptation Protocol is used within the Bluetooth protocol stack. It passes packets to either the Host Controller Interface (HCI) or on a hostless system, directly to the Link Manager.

Functions

L2CAP's functions include:

Multiplexing data between different higher layer protocols.
Segmentation and reassembly of packets.
Providing one-way transmission management to a group of other bluetooth devices.
QOS (Quality Of Service) management for higher layer protocols.

L2CAP is used to communicate over the host ACL (Asynchronous Connectionless) link. It's connection is established after the ACL link has been setup.

External links

[Bluetooth.com - Data Transport Architecture]
[Palowireless.com - L2CAP Tutorial]

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