An ISP wants to control the amount of traffic injected into the Frame Relay WAN by the customer. The SP service uses an E1 line as the access line, limits the customer to 256 Kbps on the average, but also permits bursts of up to thirty seconds at the E1 line rate.
The parameters are calculated based on the service requirements. CIR (the average bit rate) is set at the specified average rate, the burst size is set to one eighth of the CIR (32000 bits), and the excess burst size reflects the allowed thirtysecond
burst at full E1 line rate.
The excess burst size was calculated using the following formula:
1. Each second of transmission at line-speed requires 2 Mbits
2. Thirty second burst therefore requires 30 x 2 Mbits
3. The excess burst size is 30 x 2048000 = 61440000
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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