The money will fund a testing facility for open RAN equipment.
AT&T is pushing for more interoperability of equipment on its wireless network.
The NTIA has awarded $13 million to open network projects.
Grants were awarded to projects at Northeastern University, New York University, and DeepSig.
The ACP program has added more than a million Americans since April.
The FCC has said there is a $3 billion shortfall in funding to replace security threat equipment.
The $1.5 billion Innovation Fund should be used to promote global adoption, say commenters.
Comments on the $1.5B fund are due January 27, 2023.