AT&T struck a deal with Ericsson to buy up to $14 billion of its hardware and services after the Swedish equipment supplier pledged to open up its software to competing systems.

The five-year agreement would move virtually all of AT&T’s new purchases of some cell-tower equipment to Ericsson, replacing existing machinery from Finnish rival Nokia in many markets. The Dallas-based telecom giant said it plans to start the swap next year and aims to have 70% of its wireless network traffic passing through open platforms by late 2026.