A "call button" is a small button that you press to get someone's attention or ask for help.
Sentences with «call button»
Of course, if that is all too pedestrian for you, a one - touch call button on the steering wheel allows for voice commands. (cnet.com)
While on the app's main interface (the camera view / video call button screen), tap the three - vertical - dots button in the upper right - hand corner. (pocket-lint.com)
Push the On Call button in the car and be connected to an operator who can send immediate roadside assistance based on your GPS location. (bestride.com)