T-Mobile’s planned takeover of Sprint took a sizable step forward on Friday after a deal negotiated with the U.S. Justice Department behind closed doors was announced.

Under the proposed scheme, the nation’s third and fourth-largest wireless carriers would be forced to sell off wireless spectrum and prepaid businesses (such as Boost Mobile) to Dish Network, the Colorado-based satellite TV provider, effectively making it the country’s fourth-largest wireless carrier, even though it would rely entirely on T-Mobile’s own network.

T-Mobile and Sprint “must make available to Dish at least 20,000 cell sites and hundreds of retail locations,” the Justice Department said in a statement. The company that results from the deal, which would be known as T-Mobile, must also provide Dish with “robust access” to its network for a period of seven years, as Dish attempts to build out its own 5G network.

The $26 billion deal, which enjoys vocal support from the White House, still faces one significant hurdle: a lawsuit brought by 14 state attorneys general, all of whom are Democrats.

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