ATM SW

• Layered model
• ATM layer defines the cell, 5+48 octets
• WAM is User-Network-Interface (UNI)
• ATM connection is defined by Virtual Path (UNI: 8bit) and Virtual Channel (16bit)
• Each VCC (VPI+VCI) has QoS parameters:
•Service category: CBR, VBR, UBR, ABR
•Each category has traffic parameters
(e.g. with CBR peak cell rate