On the A320, the call buzzer is inhibited from T/O power up to 1500ft (you will get a flashing light on the ATT push button on the ACP) so even if they do call you, you probably won't know about it until after you're airborne. It's the same on landing which can catch you out if your airline requires a cabin secure call and they try to call you below 800ft as your only indication that they are calling is the flashing light.