User's Guide
P a g e | 5 
HT81x User Guide 
Upgrading via Local Directory: ............................................................................................................. 38 
Upgrading via Local TFTP/HTTP Servers ........................................................................................... 38 
Firmware and Configuration File Prefix and Postfix ............................................................................ 38 
Managing Firmware and Configuration File Download ........................................................................ 39 
Configuration File Download ................................................................................................................ 39 
RESTORE FACTORY DEFAULT SETTINGS ............................................................... 40 
Using the Reset Button ........................................................................................................................ 40 
Using the IVR Command ..................................................................................................................... 40 
Reset from Web Interface (Reset Type) .............................................................................................. 41 
EXPERIENCING HT81X ............................................................................................... 42 










