Comcast promotes David Don to senior vice president-public policy ... At NTIA, Eric Nelson moves up to acting director, Institute for Telecommunication Sciences; ITS Director Sheryl Genco leaving for Ericsson ... Capitol Counsel adds as partner Jeff Carroll, ex-aide to Rep. Frank Pallone, D-N.J.

Mavenir moves up Bejoy Pankajakshan to newly created role of chief technology and strategy officer; he remains executive vice president ... Silicon Labs CEO Tyson Tuttle retires Jan. 1, succeeded by President Matt Johnson ... Noname Security hires Karl Mattson from PennyMac Loan Services as its first chief information security officer ... Calix board elects CEO and board member Carl Russo to also be chairman, with outgoing Chairman Don Listwin, moving to lead independent director.