Atm adaptation layer validating the atm header
-The ATM Adaptation Layer (AAL) interfaces the higher layer protocols to the ATM Layer.-It relays ATM cells both from the upper layers to the ATM Layer and vice versa.For instance video telephony can be composed of 3 components: voice , video and data each of which will be transported over a separate VCI.This allows the network to add or remove components during the connection.
A VCI has only a local significance on the link between ATM node and will be translated in the ATM nodes.
- In addition it allows an easy multiplexing of different virtual connections over a single link.
Information ------- (Structure of ATM CELL) - ATM cells are transported via virtual channels and indrectly in virtual path. A virtual path is made from of a set of these channels .
The ATM Adaptation Layer (AAL) defines the rules for breaking up a higher level protocol data unit (PDU) into ATM cells for transmission on the network, and for reassembling the PDU at the other end Segmentation and reassembly (SAR) Download Now An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
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