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Unformatted text preview: J.5 Signaling and Routing 807 connections it can admit without violating the guranteed QoS for the connections when the cells from these connections are transferred across the network. A new connection will not be admitted if it would potentially result in the violation of QoS guarantees provided to connections that have already been established. Based on the QoS parameters that the network can guarantee (cell loss, delay, jitter) and the traffic parameters that the user can specify (peak cell rate, average cell rate, burst size), ATM identifies a number of service classes to which a connection can belong. Among these are the constant bit rate (CBR) and the unspecified bit rate (UBR) service classes. A CBR connection specifies only the peak cell rate and is guaranteed a specified cell loss, delay, and jitter. A UBR connection also specifies only the peak cell rate but has no QoS guarantees. AAL-1 has been designed specifically to support CBR connections, whereas AAL-5 is used for UBR connections.to support CBR connections, whereas AAL-5 is used for UBR connections....
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This note was uploaded on 01/15/2011 for the course ECE 6543 taught by Professor Boussert during the Spring '09 term at Georgia Tech.
- Spring '09