11
Troubleshooting
Phenomenon
Analysis
Solution
Network registration fails or network
can not be found.
The terminal may be operating in DMO.
Switch to TMO mode.
The terminal may get out of the network coverage (in TMO
mode).
Check the signal strength. Make sure the terminal is
within the network coverage.
The terminal may not be granted network access.
Contact the network operator for the terminal
authorization.
Calls cannot be initiated.
The terminal or the called party may not be within the
network coverage.
Check the signal strength. Make sure the terminal is
within the network coverage.
The terminal may operate in an improper mode.
Check the operation mode. Make sure the terminal
works in the right mode.
A certain group call can not be initiated
or received.
The terminal may not be a member of the group.
Check whether the terminal is a member of the group. If
not, contact your dealer to add the terminal to the group.
The terminal may not be authorized to access the target
group.
Contact the network operator for the terminal
authorization.
Calls are always interrupted.
The current channel is assigned to emergency calls or other
calls with higher priority.
Wait until the channel becomes available and try again.
A h a l f - d u p l e x c a l l c a n n o t b e
established.
The predefined time period for establishing a call may expire.
Make sure the call is established within the predefined
time period.
The channel may be occupied by another terminal with
higher call priority.
Wait until the channel becomes available and try again.
The channel resources may be allocated to other services
due to overloaded network.
Wait until the channel becomes available and try again.
Abnormal disconnection occurs during
a call.
The terminal may get out of the network coverage (in TMO
mode).
Check the signal strength. Make sure the terminal is
within the network coverage.
The terminal might operate at an unfavorable position
where communication may be blocked by high buildings or
frustrated in the underground areas (in DMO mode).
Move to an open and flat area, and restart the terminal.
