Nortel Networks NT8B45AAAB, T7406 manual Cleaning battery contacts, Assigning the Security

		Helpful hints / 45
Problem	Possible Cause	Suggestion
You hear warning tones.	Handset is out of	Move within range of the
The handset display	range of the base	base station.
shows Out of range...	station.	If you are on an active call
and the antenna/signal		when you move out of
strength icon		range, the call will
disappears.		automatically be placed on
		hold until you return into
		range, or until the other
		party hangs up.
The handset display	Handset and base	Assign the same Security
shows Scanning... but	station have different	code to the handset.
the antenna/signal	Security codes.	Assigning the Security
strength icon is present.		Code on page 32.
The six programmable	This condition can	To remedy conditions:
buttons on the handset	occur when:
begin to light/flash	• when the bat-	• recharge the battery
simultaneously. light or	tery power is
flash.	extremely low
	• when you have	• Reinstall the battery in
	just replaced the	the handset
	battery and it is
	not seated prop-
	erly in the hand-
	set
	• when the hand-	• ensure the handset is
	set is sitting in	seated properly in the
	the recharger	recharger

Cleaning battery contacts

Clean all charging contacts on the handset and charger with a soft, dry cloth on a regular maintenance cycle to maintain a good charge connection. Do not use water or any other liquids or solvents for this purpose.

T7406 Installation Guide