A statement from Nokia said the contract had been signed after months of testing with Nokia and DISH demonstrating their capability to operate in numerous cloud environments.
Testing was also done to verify Nokia's ability to provide a full cloud-native, containerised solution.
The deal will include subscriber data management, device management, packet core, voice and data core, and integration services. Nokia will also deliver additional cloud-native products to provide 4G, 5G standalone and voice over Wi-Fi access to core network functions.
The Finnish provider claims to lead the market in core network deployments, with 25 of the top 40 communication service providers relying on its core network products.
DISH chief network officer Marc Rouanne said: "This is an important step in bringing to life DISH's plans to deliver the first open, agile, virtualised 5G network in the US.
"Nokia's new release is cloud-native, standalone and ready for full automation, providing DISH the software capabilities required to deliver thousands of network slices with low latency and SLA on demand."
Bhaskar Gorti, president of Nokia Software and Nokia chief digital officer, said: "The benefits of Nokia's industry-leading, cloud-native standalone 5G core products built on our proven Common Software Foundation — near-zero-touch automation capabilities, high-level operational efficiencies, scale and performance — continue to set us apart from the competition."