User's Guide
P a g e | 21 
HT81x User Guide 
address to take Effect. 
03 
“Subnet “ + IP address 
Same as menu 02 
04 
“Gateway “ + IP address 
Same as menu 02 
05 
“DNS Server “ + IP address 
Same as menu 02 
07 
Preferred Vocoder 
Press “9” to move to the next selection in the list: 
  PCM U / PCM A 
  iLBC 
  G-726 
  G-723   
  G-729       
  OPUS 
10 
“MAC Address” 
Announces the MAC address of the unit. 
Note: The device has two MAC addresses. One for the 
WAN port  and  one  for  the  LAN port.  The  device MAC 
address announced is the address of LAN port. 
12 
WAN Port Web Access 
Press “9” to toggle between enable / disable. 
Default is disabled. 
13 
Firmware Server IP Address 
Announces current Firmware Server IP address.    Enter 
12 digit new IP address. 
14 
Configuration Server IP 
Address 
Announces  current  Config  Server  Path  IP  address.   
Enter 12 digit new IP address. 
15 
Upgrade Protocol 
Upgrade protocol for firmware and configuration update. 
Press “9” to toggle between TFTP / HTTP / HTTPS 
16 
Firmware Version 
Announces Firmware version information. 
17 
Firmware Upgrade 
Firmware upgrade mode. Press “9” to toggle among the 
following three options: 
  Always check 
  Check when pre/suffix changes 
  Never upgrade 
47 
“Direct IP Calling” 
Enter the target IP address to make a direct IP call, after 
dial tone. (See “Make a Direct IP Call”.) 
86 
Voice Mail 
Access to your voice mails messages. 
99 
“RESET” 
Press “9” to reboot the device 
Enter MAC address to restore factory default setting 
(See Restore Factory Default Setting section) 
“Invalid Entry” 
Automatically returns to main menu 










