Windows XP users click Start > Run and type telnet '192.168.1.254' without the quotations into the Run box
Windows Vista and Windows 7 users click Start and type 'telnet 192.168.1.254' without the quotations into the Search Box and press enter
You will be presented with a black screen prompting you for a username. Type 'Administrator' (Case sensitive and without the quotations) and press Enter
You will then be prompted for a password. There is no password by default, just press Enter
You will then be presented with the Telnet home screen for the oneHub
Step 2: Apply Fix
From the home screen, type voice fxoport config incfxodest none and press enter
Type saveall
Type system reboot and press enter.
The oneHub will now reboot. Once all the lights return to normal, the PSTN passthrough will no longer ring on the oneHub handsets.