Siemens Advance Conference Telephone Troubleshooting Guide Page 211

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Help! B-9
B. Help!
Optiset E Liberator Phone
The phone is dead, no buttons operate.
The battery pack on the handset is completely drained, there is no
power to the base unit, the telephone line cord is defective, or the
handset is defective. Make sure there is a charged battery pack in the
handset. Verify that the power supply to the base unit is plugged into
a functioning electrical outlet. If the problem persists, you may have a
defective line cord or handset, contact your phone service personnel.
When you press Talk, the message NO SERVICE is displayed.
The signal is too weak to make a call. Move closer to the coverage area
or check the power to the base unit.
When you press Talk, the message LINE IN USE is displayed.
All available communications channels are busy. Hang up and wait for
a few minutes, then try your call again.
During a call, you receive a warning tone and the message NO
SERVICE is displayed.
The handset is out of range. Move closer in range within 20 seconds to
continue the call.
During a call, the Battery Low icon is displayed on the screen.
The battery pack in the handset is low and needs to be charged.
Complete your call as quickly as possible. Then return the handset to
the charging unit for charging or replace the handset battery pack with
another charged battery pack. If you want to swap the exhausted
battery pack during a call, you have 20 seconds to change it without
dropping the call.
Cannot make outgoing calls from the handset, though incoming
calls can still be received.
The key pad on the handset is locked. Unlock the key pad using the
2-digit lock code. Follow the procedure in “To exit Lock mode” on
page 4–5 to unlock the key pad.
Handset does not ring.
Verify that the Ringer ON/OFF switch is in the ON position.
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