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HUAWEI MC850/MC851 Media Phone User Guide 15 Troubleshooting
78
power it on.
z The battery is damaged. If the preceding operations do not solve the problem,
contact your service provider to replace the battery.
Symptom: The handset can be powered on properly, but cannot access the base unit.
z The base unit may be powered off or the power connection may be faulty. Check
whether the base unit works properly.
z Perhaps the handset has not been registered with the base unit or the registration
information is lost. In this case, re-register the handset with the base unit. (For
details, see "Registering a Cordless Handset" on page 57.)
Symptom: The handset works and accesses the base unit properly, but no dial tone is
heard.
The connection of cables may be faulty. Check whether the network cable is
connected properly.
Symptom: The handset works properly, but no number can be dialed.
Perhaps you have set the dialing mode of the handset to DTMF, but your line does
not support this mode. Select the pulsing dialing. (For details, see "Setting the
Dialing Mode" on page 74.)
Symptom: The handset works properly, but you hear beeps during calls.
The battery power is too low. Check the battery power and charge the battery when
necessary.
Symptom: There are noise interferences in the calls when you are using the handset.
The handset may be too far from the base unit. Try getting closer to the base unit
with which the handset is registered. If multiple base units are available, you can also
try registering the handset to the base unit that is closer to the handset.
Symptom: The handset works properly, but does not ring upon incoming calls.
The volume of the ringtone is set to off. Try setting the ringtone to a higher volume.
Symptom: The handset can only receive calls and the keypad does not respond to
your operations properly.
The keypad may be locked. Try unlocking the keypad. (For details, see "Locking the
Handset Keypad" on page 62.)
Symptom: The battery efficiency is very low.
z The charging pins may be not clean. Try cleaning them.
z The battery life may have reached its end. Contact your service provider to
replace the battery.
Symptom: The call disconnects automatically once you use the service of easy
switch.