Plantronics Calisto Pro Series - Manual (Page 30)

Page 4
Table 1: Headset button functions
Function Button Action Sounds Indicator Light
Turn headset
on Press and hold for
 seconds 4 ascending
beeps Flashes blue
every 10 seconds
Turn headset
off Press and hold for
4 seconds 4 descending
beeps
Answer/end
a call Press for 1 second 1 high beep
Adjust
volume Press up or down
(not inward)
 beeps
when maximum/
minimum volume
is reached
Redial last
number Press twice
 beeps
Pair with
mobile
phone While powered off,
press and hold for
6 seconds Alternates
flashing blue and
red
Table : Headset alerts
Alert Sounds Indicator Light
Incoming call 3 rapid beeps
with each ring
Flashes blue rapidly while
phone is ringing
Low battery
3 beeps
every 30 seconds
Flashes red 3 times every
3 seconds
Charging Glows solid red
Fully charged Glows solid blue in charging
base