Kirk stabbed one of the com buttons on his seat arm.

"The thought had crossed my mind," she admitted, and touched her com button.

He hit the 'com button on the command chair as Spock went back to his station.

Kavi took a deep breath, then she hit the com button.

I released the com buttons, and the screen not only went dark but also the wall moved to cover it again.

Burch touched the com button on the arm of his chair.

Jumping down to his chair, Kirk punched the com button.

He hit the com button on the command chair and said, "Scott to engineering.

He reached for the com button, to call Alicia, who might be following this on her screens.