User manual

AT820
AT820
AT820
AT820 Series
Series
Series
Series User
User
User
User Manual
Manual
Manual
Manual
40
ATCOM TECHNOLOGY CO., LIMITED www.atcom.cn
B. Received: The recorder of the received calls, maximum 5 0 items.
C. Missed: The recorder of the missed calls, maximum 5 0 items.
6
6
6
6 .
.
.
. FAQ
FAQ
FAQ
FAQ &
&
&
& Trouble
Trouble
Trouble
Trouble Shooting
Shooting
Shooting
Shooting
6 .1. Frequently Asked Questions
6
6
6
6 .1.1.
.1.1.
.1.1.
.1.1. How
How
How
How to
to
to
to make
make
make
make the
the
the
the factory
factory
factory
factory reset
reset
reset
reset
There are t wo ways to make the factory reset:
A. Factory reset from keyboard ， steps are:
1. Press soft key “ MENU ” , input right password ;
2. Find and select “ Factory Reset ” ;
3. Press “ OK ” , then the phone will restart automatically and factory reset.
B. Factory reset through web, please refer to Reset & Reboot .
6
6
6
6 .1.2
.1.2
.1.2
.1.2 Upgrade
Upgrade
Upgrade
Upgrade firmware
firmware
firmware
firmware under
under
under
under safe
safe
safe
safe mode
mode
mode
mode
If the phone could not start up normally, upgrade firmware under safe mode. Steps
are:
1. Build a TFTP server and set its IP address as 192.168.1.200;
2. Copy the firmware to the root directory of the TFTP server and modify the file
name as AT820.FW;
3. Make sure the TFTP server and the phone are contacting with the same switch
and reachable to each other;