The AT-168V is a VOIP ATA which is made by atcom.
Safe mode with firmware re-flash instructions from atcom:
1.Press and hold IP button for 10 seconds while power up 2.Power off and do 1 again, after the second time power up, the AG-168V will in safe mode and have a default IP address is 192.168.1.100. 3.Put the AG-168v and a Windows PC on the same LAN. 4.Run palmtool.exe on PC. You can try palmtool "Start Debug" button, a debug window will pop up 5.If you PC's address is not 192.168.1.xxx (not on the same LAN of the IP phone), change its TCPIP settings to the same LAN. 6.Put 192.168.1.100 (or other default IP) in the palmtool "IP Address on Chip" field. 7.Find the correct upgrade file, and use palmtool "Update Program" button to update your IP phone.
Firmware
SIP Firmware http://www.atcom.cn/down/program/en/pa_series/SIP/AG168v_sip_us_147015.zip
IAX2 Firmware http://www.atcom.cn/down/program/en/pa_series/IAX2/AG168v_iax2_us_147015.zip
Utilities
Manuals
SIP http://www.atcom.cn/down/userguide/EN/AG-168V/AG-168V_SIP_Manual_EN.zip
IAX2 http://www.atcom.cn/down/userguide/EN/AG-168V/AG-168V_IAX2_Manual_EN.zip
ref: http://www.atcom.cn/