Iowa Utility Deploys JumboSwitch ® Multi-Service Ethernet Platform To Increase Data & Voice Connectivity Options Case Study • An OC-48 SONET for network back-up and T1/ T3 to customers on the western Iowa corridor (Omaha to Sioux City, IA, to Sioux Falls, SD). • A microwave network for connecting remote substations to the primary network via T1 circuits. These communication technologies complement each other in many ways, according to Keith Schiltz, NIPCO’s Metering, Digital SCADA and Telecommunications Services Manager. “Depending on the application, both SONET and Ethernet work well,” he said. “And, depending on the cards, both offer an on ramp and an off ramp.” Primary Communications Network In 2006 NIPCO made a decision about the direction of its communication networks

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