The document discusses Asynchronous Transfer Mode (ATM) networking. It describes the five ATM service categories including Constant Bit Rate, Variable Bit Rate, Available Bit Rate, and Unspecified Bit Rate. It also outlines the ATM layer diagram and Adaptation Layer which supports these different service categories with various quality of service levels and priority settings for real-time and non-real-time traffic. References to additional ATM resources are provided at the end.

1. ATM PRADEEP THOMAS THUNDIYIL

4. ATM Capacity Allocation

5. ATM Layer Diagram

7. AAL Layer Service Category Network Priority Cell Loss AAL 1 CBR, connection oriented, Circuit Emulation CBR -1 Low AAL 2 RT VBR , conn oriented, synchronous (doesn ve SAR) RT VBR - 2 Med AAL ¾ NRT ,async, connectless NRT VBR - 3 Med AAL 5 Similar to AAL ¾, simplified header VBR , connection oriented async

8. ATM Cell Formation

10. Sublayers of AAL

16. Cell Header

17. Transmission Media

20. Virtual Path Switching

22. Receiver Modes