 exponential service times (u) Blocking probability Pb as a function of the offered traffic A in Erlang for various values of the number of channels n with equation (6.6) List of Figures The average utilization per channel a equation (6.8) as a function of the number of channels for given values of the blocking Two-dimensional state transition diagram for a loss system with n channels offered to two traffic streams [Ive04] Two-dimensional state transition diagram for a loss system with class limitations: n1 for the traffic stream 1 and n2 for the traffic stream 2[Ive04] Two-dimensional state transition diagram for a loss system with class limitations: (n 1 =10, 21=5, u1=1); (n2 =3, A2=1, u2=1) State Probability of two-dimensional Erlang-B formula with class limitations: (n1=10, A1=5, u1=1); (n2=3, 22=1, u2=1) Validation of Erlang-B formula for the voice scenario: CAC reject ratio and link utilization over offered voice traffic Validation of Erlang-B formula for the voice scenario: state probabilities Insensitivity of Erlang-B model (different service time distributions) Validation of Erlang-B formula: dimensioning for 1% CAC reject ratio Validation of Erlang-B formula: dimensioning for 5% CAC reject ratio Validation of Erlang-B formula for voice scenario: CAC reject ratio and link utilization over offered voice traffic TCP slow start and congestion avoidance [Rie04] Illustration of rate sharing Flow Level Model for lub Interface Illustration of M/G/R-PS Model Delay factor and normalized throughput VS. load - M/G/R-PS Model Data transfer in TCP with slow start TCP Procedure Flow level model for multiple RAB scenarios Processor Sharing Elastic traffic shares the lub link with circuit-switched traffic Average file transfer delay over load: ftp scenario, RAB 128 kbps, no CAC, constant file size of 12 kbyte, lub link = 1 E1 line Average file transfer delay over load: ftp scenario, RAB 128 kbps, no CAC, constant file size (5; 100 kbyte), lub link = 1 E1 line Different file size distributions: ftp scenario, RAB 128 kbps