AT&T TL7600 user manual Alert tones, Volume + keys are

Operation

Alert tones

Alert tones

Headset alert tones

Three quick	• VOLUME + – keys are
beeps.		pressed when the volume
		is already at its highest or
		lowest setting.
	•	The headset is not
		registered and the headset
		ON/OFF button was
		pressed.
	•	The headset has gone out
		of range from the headset
		base during a call.
1 short beep	Low battery warning.
every 20
seconds.
1 short beep	The call is muted.
every 15
seconds.
1 long beep	Call waiting alert tone.
repeated.
1 short beep.	When the headset ON/OFF
	key is pressed to go on-hook
	or off-hook.

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