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Display message
Cause/solution
Requires subscription to
Caller ID.
R
You must subscribe to a Call Display service. Once
you receive caller information after subscribing to a
Call Display service, this message will not be
displayed.
Use rechargeable battery.
R
A wrong type of battery such as Alkaline or
Manganese was inserted. Use only the rechargeable
Ni-MH batteries noted on page 5, 8.
Troubleshooting
If you still have difficulties after following the instructions in this section, disconnect the base unit’s
AC adaptor, then reconnect the base unit’s AC adaptor. Remove the batteries from the handset,
and then insert the batteries into the handset again.
General use
Problem
Cause/solution
The handset does not turn on
even after installing charged
batteries.
R
Place the handset on the base unit or charger to turn on
the handset.
The unit does not work.
R
Make sure the batteries are installed correctly (page 12).
R
Fully charge the batteries (page 12).
R
Check the connections (page 11).
R
Unplug the base unit’s AC adaptor to reset the unit.
Reconnect the adaptor and try again.
R
The handset has not been registered to the base unit.
Register the handset (page 48).
I cannot pair a cellular phone to
the base unit.
R
Depending on the compatibility of the cellular phone, you
may not be able to pair it to the base unit. Confirm that
your cellular phone supports the hands-free profile (HFP)
specification.
R
Confirm that the Bluetooth feature of your cellular phone
is turned on. You may need to turn this feature on
depending on your cellular phone.
R
The Bluetooth technology on your cellular phone may not
be functioning normally. Turn off and on your cellular
phone.
R
If your cellular phone is already connected to another
Bluetooth device such as a Bluetooth headset, turn it off
or disconnect it from your cellular phone.
R
Some cellular phones may require you to enter the base
unit PIN to pairing. Confirm that you entered the correct
PIN.
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Useful Information
TG78xxC(en)_1221_ver013.pdf 72
2012/12/21 11:21:32