Huawei IP Phone eSpace
7810&7820&7830&7850&7870&7803X
Administrator Guide
4 Troubleshooting
Issue 01 (2011-12-31)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
107
Troubleshooting
Set the IP address of the IP phone to an available value.
4.2.4 IP Phone Can Make Calls But Cannot Receive Calls
Symptom
An IP phone can make calls but cannot receive calls.
Cause
When the DND function is enabled, incoming calls are rejected.
Troubleshooting
If the DND icon is displayed on the IP phone's LCD, the DND function is enabled.
When eSpace 7810 is in the standby state, press the
Menu
soft key, select
Features
, and press
Enter
. Then select
DND
and press
Enter
. Press the left or right arrow key to select
Disabled
,
and press the
OK
key.
When eSpace 7870, eSpace 7850, eSpace 7830 and eSpace 7820 is in the standby state, press
the
DND
soft key to disable the DND function.
4.2.5 IP Phone Cannot Make and Receive Calls
Symptom
The message "No service" is displayed on an IP phone's LCD.
The
or
icon is displayed on an IP phone's LCD.
When an IP phone's circuit board is changed, the blank screen (eSpace 7820/eSpace
7830/eSpace 7850) or full-screen characters (eSpace 7810) or red screen (eSpace 7870)
are displayed, and the account indicator and message indicator are blinking (eSpace
7810/ eSpace 7820/eSpace 7830). Then the page is displayed normally and accounts can
be registered, but the IP phone cannot make or receive calls.
Cause
No account is registered.
Account registration fails.
The MAC address is not burned or an incorrect MAC address is burned after the circuit
board is changed in the IP phone.
Troubleshooting
Verify that an account has been registered.
Verify that account information is correct and complete.
Use a burning tool to burn the MAC address listed in the label on the rear of the IP phone
to the new circuit board.
